Times coverage: Women identified, missing persons cases reopened after photos released from Grim Sleeper's home

Investigators are looking into four missing persons cases after law enforcement released photos taken from the home of Lonnie Franklin Jr., the alleged South L.A. serial killer known as the "Grim Sleeper."

Since last month, the Los Angeles Police Department has been flooded with hundreds of phone calls, e-mails and other tips after detectives publicized photographs of unidentified women that were found in a trailer and garage belonging to Franklin.

He has pleaded not guilty to 10 killings in South L.A. over three decades.

So far, at least 53 women have been identified by LAPD Robbery-Homicide detectives who are continuing to receive information since going public with the approximately 180 images, including duplicates.

In all, 79 photos have been or are in the process of being removed from the LAPD website after the women in them were identified.

Police would not discuss details of the missing persons cases other than to say they involved women whose images were found among Franklin's possessions.

Reporter Andrew Blankstein has more on the story: 'Grim Sleeper' photos: 4 missing persons cases opened, 53 women identified

Photo: Photographs found in the possession of Lonnie David Franklin Jr. are shown during a news conference in Los Angeles, Thursday, Dec. 16, 2010. Bracing for a flood of tips from the public, detectives released dozens of photographs of unidentified women that were found at the home of the suspected "Grim Sleeper" serial killer. Credit: Jae C. Hong / Associated Press