Los Angeles ? Investigators who released decades-old pictures of about 50 women photographed by a murderer said Thursday that they believe more than half of the women are alive, but that three appear to be homicide victims.

Several of those photographed by death row inmate William Richard Bradford have yet to be identified, but Los Angeles County sheriff’s investigators said they have tentatively identified 31 women since publicizing the long-forgotten images Tuesday.

Twenty-eight of those women were believed to be alive, sheriff’s spokesman Steve Whitmore said. Three are believed to have been killed, including a 31-year-old mother of two whose decapitated body was found in a canyon in 1978.

The photos of the women, many scantily clad and striking poses like amateur models, languished in an evidence room from 1984, when they were seized from Bradford’s home, until detectives rediscovered them last month.

Bradford, now 60, was condemned for killing two aspiring models in the early 1980s.