Published: Feb 14, 2013 11:55 PM EST
Updated: Feb 15, 2013 12:03 AM EST

BIG BEAR LAKE, Calif. (AP) - Court documents show fugitive ex-cop Christopher Dorner gathered information on a women's basketball coach and her fiance before he apparently killed them earlier this month.

The Orange County Register reported Thursday that Irvine police believe Dorner researched 28-year-old Monica Quan and her boyfriend 27-year-old Keith Lawrence. The records also say Dorner may have had documents containing information about Quan and her family.

Police tied Dorner to the slayings after reading a manifesto he wrote in which he sought revenge against those he believed ended his law enforcement career. Quan's father represented Dorner during a disciplinary hearing.

Dorner's charred body was found inside a burned-out cabin earlier this week after a shootout with authorities. Officials say his dental records were used to make the confirmation. 

He is also suspected of killing two law enforcement officers.