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Derek Medina, Fla. man, posts picture of dead wife, confession to her murder on Facebook, report says

Derek Medina in an undated personal photo Facebook

Updated August 9, 2013 10:30 a.m. EST

(CBS) SOUTH MIAMI - Derek Medina, a 31-year-old South Miami man, allegedly posted a picture of his dead wife Thursday morning on a Facebook page attributed to him along with an alleged confession to her murder, CBS Miami reports.

PICTURES: Fla. man posts pic of dead wife, confession on Facebook

"I'm going to prison or death sentence for killing my wife love you guys miss you guys take care Facebook people you will see me in the news. my wife was punching me and I am not going to stand anymore with the abuse so I did what I did I hope you understand me," the Facebook post read.

According to the station, Medina went to police Thursday morning to tell authorities that he had a domestic dispute with his wife and then shot her. He was charged with first-degree murder.

Miami-Dade police said in an arrest affidavit that Medina said he shot Jennifer Alfonso, 26, at their South Miami home after she said she was "leaving him." When officers responded to the home, they found Alfonso's body, as well as her 10-year-old daughter, who was unharmed.

According to the affidavit, Medina said the couple became involved in a heated argument in an upstairs bedroom when he armed himself with a gun and pointed it at her. He said Alfonso left the bedroom, returning later to say she was leaving him. He says he went downstairs and confronted her in the kitchen, when she began punching him. He claims he went back upstairs to get his gun and confronted her again, at which time she grabbed a knife. Medina said he was able to disarm her and put the knife in a drawer, but that when she began punching him again, he shot her several times, the affidavit says.

The alleged confession was posted on Facebook at 11:11 a.m. Thursday. While the post claimed that his wife was punching him and that he wasn't going to stand any more abuse, YouTube videos linked to his Facebook page earlier this week show him working out in a martial arts studio, punching and kicking a heavy bag.

The next and final post -- also at 11:11 a.m. and titled "Rip Jennifer Alfonso" -- was a gruesome photograph showing a woman in black leotards slumped on the floor. She looked like she had fallen backward, with her legs bent to her sides and blood on her left arm and left cheek. The photo was up for more than five hours before Facebook removed the page late Thursday afternoon.

In a statement given to CBS Miami, Facebook said: "The content was reported to us. We took action on the profile - removing the content and disabling the profile, and we reached out to law enforcement. We take action on all content that violates our terms, which are clearly laid out on our site. As this is an ongoing law enforcement investigation, I would refer you to the authorities in Florida for any additional details."

Police declined comment on the Facebook posts.

Public records show that Medina and Alfonso first married in January 2010, divorced in February 2012 and then remarried three months later. Medina bought the condominium unit where the couple lived in March 2012 for $107,000.

On his Facebook page, Medina claimed to be a supervisor at a property management company and to have appeared in the Miami-based crime drama "Burn Notice," though his name doesn't appear in online credits for the show.

On a personal blog to which the Miami Herald linked, someone named Derek Medina touted e-books of his on subjects ranging from saving marriage through communication to "humans who are gifted and can see the supernatural spirit ghost world we live in."

"The author was with his wife in New York and his wife was attacked by a ghost," he writes, describing the e-book. "She was seeing a ghost and was being taunted and messed with. She informed her husband and he told her to go to sleep and he would watch over her. Minutes later he was attacked by a demon ghost and he was sick and throwing up."

Photos posted by Medina on Wednesday show the family enjoying a meal alongside an unnamed marina and lounging beside a swimming pool.

Police said in the arrest affidavit that Medina never called 911, only turning himself into police after going to see family and confessing.

Thursday night, police had taped off the area around the condo complex where the couple lived, in a suburb south of downtown Miami. The complex is made up of yellow-peach colored townhouses with faded wood roofs.

Several cars filled the near-empty parking area in front of the townhouses as police questioned neighbors and possibly friends of the victim. Some of those gathered were crying.

Neighbor Phil Eby said he didn't know the couple very well but expressed surprise at the shooting.

"I met him a couple of times. He seemed like a pretty nice guy," Eby said. "But I don't remember her at all."

It wasn't immediately clear if Medina had an attorney. 

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