CHANDLER, Ariz., April 15, 2009

Teen Killed In Love Triangle With Teacher

48-Year-Old Math Teacher's 20-Year-Old Boyfriend Accused Of Stabbing 18-Year-Old Ariz. Boy

  • This undated booking photo provided by the Maricopa County Sheriff's Office shows Sixto Balbuena.

    This undated booking photo provided by the Maricopa County Sheriff's Office shows Sixto Balbuena.  (AP/Maricopa County Sheriffs Office)

  • Interactive Crime Beat

    Statistics and specifics on crime in America.

(AP)  A Chandler high school student involved in a love triangle with his 48-year-old math teacher was stabbed to death after the older woman's 20-year-old boyfriend found them together in her bedroom, police said Tuesday.

Sixto Balbuena, a Navy sailor on leave from California, found his girlfriend naked and the 18-year-old student in his boxer shorts in the woman's bedroom around 2:40 a.m. Friday, according to police reports and court documents.

Balbuena told police that Samuel Valdivia apologized to him before Balbuena began kicking, punching and throwing things at him, according to a police probable cause statement.

Police said Balbuena told them he "wanted to teach the victim a lesson," and stabbed him in the lower side with a kitchen knife, according to the court document. Valdivia later died at a hospital.

He also threw his girlfriend, Tamara Hofmann, to the floor, jumped on top of her and demanded to know how long she had been cheating on him, according to the document.

Balbuena said he never meant to kill Valdivia, telling police "the blade went in like going into butter" and that he just wanted to show Valdivia how much he hurt him by sleeping with Hofmann.

Police said Hofmann taught Valdivia math at El Dorado High School in Chandler and was also Balbuena's teacher when he attended Marcos de Niza High School in Tempe.

A call to both schools was not immediately returned Tuesday.

The was no phone number listed for Hofmann.

Balbuena is the one who called 911. He told officers he felt remorse for stabbing Valdivia after seeing him lying on the floor struggling to breath, police said.

Balbuena was arrested on a charge of second-degree murder after police found him covered in blood and told them about the killing. He remained jailed in lieu of $100,000 bond on Tuesday and did not yet have a lawyer.

The court document said Balbuena called Hofmann to tell her he was coming to visit from California. When he arrived at her house, she didn't answer the door or calls to her cellular phone.

That's when police say Balbuena told them he went in the unlocked door and heard noises from the bedroom. He told officers he thought something was wrong with Hofmann, so he grabbed a knife from the kitchen before discovering her with Valdivia, the court document said.

Police spokesman Sgt. Joe Favazzo said Hofmann is being investigated for potential misconduct.

A 2006 Chandler police report obtained by The Associated Press on Tuesday shows that police suspected Hofmann of having a sexual relationship with a then-17-year-old Balbuena.

After responding to a call about a suspicious vehicle, police found Hofmann and Balbuena sitting in a car around 1 a.m. on Nov. 1, 2006.

Hofmann told police Balbuena was a family friend and that his parents knew he was with her because they had all gone to a soccer game that night, according to the police report.

While interviewing Balbuena, who initially identified himself as his 21-year-old brother, police found that he had Hofmann's bra, according to the report.

"When questioned about Sixto (Balbuena) being in possession of her bra, Hofmann reported she had changed clothes in her car while at the soccer game because she was cold, and she told Sixto to put her clothes in the back of the car after she was done," according to the report. "Hofmann said she did not know Sixto had taken her bra."

When police called Balbuena's parents, they told them they did not know their son was with Hofmann. The parents also told police that Hofmann was Balbuena's math teacher and tutored him after school.

Both Hofmann and Balbuena denied being in a sexual relationship, and police closed the case.

© MMIX The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.
Add a Comment See all 12 Comments
by Wowzergz April 21, 2009 2:07 PM EDT
Damn! I wish I had some dirty ***** teachers when I went to school! I would have loved to bang so many of my hot teachers! I had this one teacher in highschool named Ms. Rand and she was so fine! She used to wear these sexy stockings and had this great ass and perfect legs! All the guys talked about wanting to bang her! It's sad this poor kid died, but he was so lucky to have a teacher sex fantasy come true! All you uppity parents need to be on this psycho sailors case, and not the teacher! She was just teaching this kid about sex, which you parents never do! Young guys have hormones and need to have sex, but the majority of young girls are snobs who won't give it up. Let the young guys do their teachers! It's good for them!
Reply to this comment
by bunnie69 April 16, 2009 10:54 PM EDT
this is sad :( to see a young man be molested by a old teacher who he trust and then get involve with her and then go to jail because he got to old for her and she found another poor kid to molest....i think this teacher should go to jail just as well....regardless we should b able to trust these teachers to teach our kids more then how to have sex....thats 4 us parents to inform our kids when and why its ready to happen ..... teachers u need to do ur job there aint no extra benefits from the kids...let them be kids and not become adults when u think they are ready.....
Reply to this comment
by toldyouso29 April 16, 2009 4:32 AM EDT
rrosza -

She got away with it cuz they got married and had more kids after she did her time. Nobody could convince the poor kid that he'd be better off with a younger woman, one at least somewhat close to him in age. Mary Kay started having *s**e**x with him when he was only twelve years old. I'm sorry, but that is just way, way, too sick.
Posted by mswolfestock at 10:52 AM : Apr 15, 2009



But explain why--it always seems to be a woman of one race exploiting a minority kid--and rarely facing any punishment? Please show us the cases of Black, Hispanic, asian, Indian or Native American women who abuse their professions and target kids for sexxxx....think about it--almost always, the perp is ***** and the kid is black oe hispanic or from an island.....
Reply to this comment
by mswolfestock April 15, 2009 1:52 PM EDT
rrosza -

She got away with it cuz they got married and had more kids after she did her time. Nobody could convince the poor kid that he'd be better off with a younger woman, one at least somewhat close to him in age. Mary Kay started having *s**e**x with him when he was only twelve years old. I'm sorry, but that is just way, way, too sick.
Reply to this comment
by ThisIsTheEndd April 15, 2009 12:24 PM EDT
Well its normal for a woman to develop high passion after 40. Up until then, its too much fun denying a man of his passion. So the 20 year old man with the 40 year old woman is a fun mix, because it is temporary. That way he "shows" the girls his age who enjoy ignoring him and she enjoys "showing" the guys her age who are ignoring her.
Reply to this comment
by rrozsa April 15, 2009 12:07 PM EDT
Mary Kay LeTourneau got away with it and now all the other sick women think it's okay to go down the same road.

Posted by mswolfestock at 8:10 AM : Apr 15, 2009

============================

I thought LeTourneau served time in prison? How is that "getting away with it"?
Reply to this comment
by barbaram99 April 15, 2009 11:46 AM EDT
At teachers's college they should address this issue. I am in my 59s. They had a dress code for us atudents and one for teachers when I was in high school years ago. Teachers had to dress as adults and wear their hair as agults. They were barred eo dress,never ever date a child. I had teachers that did help me . They never ever lowered themselves.
Ateacher is to teach his/her students and they do not cross the line. Ever. Parents send their kids to class to be taught. That lady crossed the line. Dhe knows better. So did that teacher gere in WA who did time for the same issue. We pay them to teach the kids. Not this. I am appalled.
Reply to this comment
by geminispyder-2009 April 15, 2009 11:23 AM EDT
The moman is in her 40s and dating what I call kids as they are way younger as her. Yep toldyouso I /member that . Teachers are suppost to teach their students and not date them.
Posted by barbaram99 at 6:46 AM : Apr 15, 2009

The teacher definately taught those two something. As far as the age difference is concerned, if she were Asian, I could see that; as far as their looks, you can shed about 10 years from their actual age.

Google: Gong Li, hottest mid-40s woman I've ever seen.
Reply to this comment
by squeakof2006 April 15, 2009 11:13 AM EDT
As a teacher, she should have known better. We talk about this in the Ed classes in college, keeping yourself above the appearance of improper behavior. As for the "men" she was involved in... well, 1 dirtbag down, 1 to deport. These people come over here and kill each other or citizens and have no remorse. He should be sent back to wherever he came from.
Reply to this comment
by mswolfestock April 15, 2009 11:10 AM EDT
Something has to be done about all of these sick women who prey on young boys. Every time this happens, it puts other women under a cloud of suspicion.

Mary Kay LeTourneau got away with it and now all the other sick women think it's okay to go down the same road.

Hey parents!!!!!! Y'all really need to pay attention to your kids, and for goodness sake, don't just innocently assume that Johnnie's teacher cares about his math skills.
Reply to this comment
by barbaram99 April 15, 2009 9:46 AM EDT
The moman is in her 40s and dating what I call kids as they are way younger as her. Yep toldyouso I /member that . Teachers are suppost to teach their students and not date them. My mother has has a word for them jail bate if they are under age .I would not as I am in my 50s.
To kill over well the sailor needed to walk away and date a lady in his age group and not some older woman.I would not date anyone not in their 50s.
This woman is more of a age where she is too old to date 18 to 20 year olds. She is about the age of their mothers. Talk about robbing the craddle. I can pass for 29 but am 54. Teachers teach their students. They must not date them ever.
Reply to this comment
by toldyouso29 April 15, 2009 9:03 AM EDT
Old woman of a different race--Hispanic children as lovers--mayhem--now...why does this story seem familiar (remember the teacher running away to Mexico with her 7th grade student a few months ago?) Starting to be a really ugly habit.....
Reply to this comment
See all 12 Comments

60 Minutes

The secrets of tennis legend Andre Agassi; the growing threat of cyber wars; and more.
Read More

Latest News
News in Pictures
Scroll Left Scroll Right
  • The Fall Of The Berlin Wall The Fall Of The Berlin Wall

    Looking Back at the Wall that Once Divided Germany On the 20th Anniversary of Its Collapse

  • Patricia Clarkson Patricia Clarkson

    Television and Film Actress, Yale School of Drama Graduate and Academy Award Nominee

  • Day in Pictures Day in Pictures

    A Glimpse at the Day's News as Seen Through a Camera Lens

  • Andre Agassi Andre Agassi

    Former Top-Seeded Tennis Star, Gossip Column Favorite and Philanthropist

  • Yankees Victory Parade Yankees Victory Parade

    The Yankees Celebrate Their 27th World Series Championship with a Ticker-Tape Parade Up Broadway

  • Orlando Office Shooting Orlando Office Shooting

    A Gunman Opens Fire at the Offices of an Engineering Firm Where He Once Worked

Connect with CBS News

Stay connected with the CBS News using your favorite social networks and online news applications: