[…] According to the affidavit, Marquez moved to Riverside and met next-door neighbor Farook in approximately 2005. After their initial meeting, Farook introduced Marquez to Islam, and, in 2007, Marquez converted to Islam, prosecutors said.
In late 2011, according to the affidavit, Marquez and Farook started planning to use firearms and explosives to carry out terrorist acts – attacks that Marquez told investigators were designed to maximize the number of casualties that could be inflicted.
The affidavit recounts a recent interview with Marquez in which he is said to have admitted making plans with Farook to attack the library or cafeteria at Riverside Community College (RCC), where both men had been students.
The plan allegedly was to throw pipe bombs into the cafeteria area from an elevated position on the second floor, and then to shoot people as they fled, according to prosecutors.
Marquez and Farook also allegedly planned to attack eastbound lanes of State Route 91 (SR-91) during afternoon rush hour, according to the affidavit. Marquez told investigators that they chose a particular section of the freeway because there were no exits, which would increase the number of targets in the eastbound lanes.
The plan, prosecutors say, was for Farook to throw pipe bombs on to the freeway, which they believed would disable vehicles and stop traffic. Farook allegedly planned to then move among stopped vehicles, shooting into them, while Marquez shot into vehicles from a position on a nearby hillside.
Marquez allegedly said that he would watch for law enforcement and emergency vehicles, and his priority was to shoot law enforcement before shooting life-saving personnel.