Police Officer Justin Putnam was shot and killed when he and other officers responded to a domestic assault incident at an apartment complex in the 2900 block of Hunter Road at about 7:00 pm. As the officers entered the apartment they were ambushed by a male subject with a rifle. Officer Putnam was killed and two other officers were critically wounded. The subject committed suicide after shooting the officers. Officer Putnam had served with the San Marcos Police Department for 5-1/2 years.