WESTWOOD—The Los Angeles Police Department is investigating four of its officers who responded to a 911 call near the UCLA campus on September 21, the morning a 21-year-old student Andrea DelVesco was murdered.

Reports indicate that homicide detectives gathered information from residents who said that police responded to a 911 call placed by residents who heard screams coming from the apartment.

According to NBC, the LAPD would not comment on what kind of 911 call it was, when they arrived, and what they did there.

DelVesco was a fourth-year UCLA student from Austin, Texas, and a member of the Pi Beta Phi sorority. Her body was found by firefighters after her apartment was burned down in an arson fire on September 21.

According to the Los Angeles County District Attorney’s Office, the alleged assailants, Alberto Hinojosa Medina and Eric Marquez, both 22, are each being charged with murder and burglary. Medina is being charged with arson. They have each pleaded not guilty to the charges.

Prosecutors say that Marquez, a student at UCLA, waited in the car while Medina, from Fresno, entered one apartment and stole several items, and then broke into DelVesco’s apartment where he fatally stabbed her before setting the apartment on fire. Prosecutors asked that Medina be held without bail and that bail for Marquez be set at $1.1 million.

Medina is eligible for the death penalty, which prosecutors will later decide whether or not to pursue.

Charlie Beck, LAPD Chief, said in a statement, “This was a horrific crime that I know shocked the school and much of Los Angeles. I was also extremely troubled by it.”

Regarding DelVesco’s murder, the Los Angeles Police Department is asking anyone who may have any information about the case or saw anything between the hours of 4 a.m. and 7 a.m. on the 10900 block of Roebling Avenue to contact the Robbery Homicide Division, Homicide Special Section at (213) 486-6890 during weekday business hours (Monday – Friday from 06:00 am and 4:00 pm). 

You may also contact any of the following 24-hours a day, after hours and on weekends Crime Stoppers at (800) 222-TIPS (800-222-8477) LAPD “24-7″ at (877) 527-3247 or (877-LAPD-247). Text the word “lapd” and your message to 274637 (CRIMES).

Logon to www.lapdonline.org and click on “Anonymous Web Tips.”