A 34-year-old man has been convicted of four counts of first-degree murder for shooting and killing two men and two women outside a Los Angeles boardinghouse three years ago.

The district attorney's office says jurors found Ka Pasasouk guilty Thursday after deliberating for less than two hours.

He could face the death penalty for killing 49-year-old Teofilo Navales, 34-year-old Robert Calabia, 24-year-old Amada Ghossein and 26-year-old Jennifer Kim in December 2012.

Jurors will return Dec. 2 for the beginning of the trial's penalty phase. They will be asked to recommend whether Pasasouk should be sentenced to death or life in prison without parole.

Deputy District Attorney Dan Akemon said the crime began as a drug- and alcohol-fueled robbery and the killings continued to get rid of witnesses.