Updated

A man who's on death row for killing 10 women in the Los Angeles area has been convicted of four more murders.

The district attorney's office says Chester Turner was convicted Thursday.

The former pizza deliveryman faces a possible death sentence.

He already was sentenced to die in 2007 for killing 10 women, one of them pregnant.

Authorities say Turner was among several serial killers who stalked LA-area women during a crack cocaine epidemic in the 1980s and 1990s. Some attacks were dubbed the "Southside Slayer" killings.

Two years ago, Michael Hughes was sentenced to death for strangling a 15-year-old girl and two women. He earlier got life for four killings.

Lonnie Franklin Jr. has pleaded not guilty to 10 so-called "Grim Sleeper" killings that took place between 1985 and 2007.