Irvine police detectives believe fired police Officer Christopher Dorner gathered intelligence on his first two victims before he shot them on the rooftop of an Irvine parking structure, documents reviewed by the Register show.

The slayings of Monica Quan and Keith Lawrence opened what police say was a murderous campaign carried out by Dorner in retribution for his firing several years ago from the Los Angeles Police Department.

The two former basketball standouts, newly engaged, were shot so many times with a 9 mm pistol that investigators concluded the killer had used a high-capacity magazine, the court documents show. Orange County prosecutors were poised to file murder charges against Dorner and indicated that they would have sought the death penalty.

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