Updated 2 hours ago NBC Universal, Inc. San Diego police said on Tuesday that they had shot and killed Christopher Marquez after a nearly 12-hour standoff on the campus of San Diego High School following a police chase that involved gunfire. In the weeks prior, Marquez was allegedly involved in an incident on April 5 that involved a stolen car and a gunfight with a National City police officer, and the shooting of a bounty hunter on March 16 in Chula Vista. Investigators said Marquez was able to elude capture after both of those events. Download our NBC 7 mobile app for iOS or Android to get alerts for local breaking news and weather.