SCOTTSDALE, Ariz. - Police trying to find the person who killed a 31-year-old woman in February are asking the public to contact them if they know a man who had or gave away a Tiffany bracelet in the past month, reports CBS affiliate KPHO.

At a public meeting Wednesday night, Scottsdale Police revealed that the person who killed Allison Feldman stole items from her, including her iPhone 6, credit cards and a Tiffany bracelet.

Feldman's body was discovered by her boyfriend on Feb.18 at her home. Officers also said the suspect likely suffered minor cuts or injuries to this hands and arms during a struggle with the woman. Police said they believe the suspect left Feldman's home at around 1 a.m.

During the meeting, investigators told the public they believe this homicide is an "isolated" incident and not a random crime. They also said there did not appear to be any sign of forced entry, but they would not say whether Allison Feldman knew her attacker.

Investigators spent four days combing through Feldman's home looking for evidence.

Scottsdale police released a statement that said in part:

"Today's homicide investigations depend heavily on forensic evidence and science. These investigations take time as scientific evaluation is applied to the collected evidence. This is very apparent in this investigation.

"Our detectives and crime scene specialists worked tirelessly for three days methodically and systematically collecting forensic evidence from inside the home. This evidence will dictate the focus and speed of the investigation.

"At this point we cannot release any more specifics on the case as it could jeopardize the success of the investigation. The Scottsdale Police Department is utilizing all investigative resources available on this case and is committed to investigating it to the fullest."

Feldman's sister, who lives in Minnesota, told KPHO that Allison "was a beautiful person."

"If you look at her Facebook page right now, there are a gazillion tributes out there," said Kelly Weinblatt. "Everyone loved Allison, and she didn't deserve what happened. So if anyone saw anything, the smallest of things that didn't seem important at the time to please call the Scottsdale Police."

"We literally can think of no one that would want to harm her. She was friends with everybody," Weinblatt said.

"Maybe somebody realizes they were driving through the neighborhood and didn't think of it at the time, and maybe they saw something that didn't seem important then but is important now," Weinblatt said.

Neighbors said Feldman had recently moved in.

Police are asking for your help. You can make an anonymous tip by logging onto tipsoft.com or by calling 480-312-5000.