Brianna Kupfer Murder, Cops Identify Suspect

There's been a break in the investigation into the Brianna Kupfer murder case in Los Angeles ... law enforcement says they've identified a suspect.

The Los Angeles Police Department says the man is 31-year-old Shawn Laval Smith and he's now wanted in connection with Brianna's murder.

Cops released a mug shot of the suspect Tuesday and say Smith should be considered armed and dangerous. LAPD says he's been all over Southern California recently and is likely to be using public transportation.

Brianna, a grad student at UCLA, was murdered Thursday while working at a furniture store in what cops are calling a random daytime attack.

Police say Smith did not know Brianna and they do not have a motive. Cops say the suspect attacked Brianna with a knife and fled the store using the back door.