Officials have offered another update on the stabbing attack on the UC Merced campus of the University of California yesterday morning, which injured four and left the attacker dead, shot by campus police officers. The knife attacker was identified this morning as 18-year-old student Faisal Mohammad.

At this afternoon’s press conference, both Merced County Sheriff Vern Warnke and university chancellor Dorothy Leland said that the stabbing attack was personally motivated.

Yesterday the sheriff revealed that the stabbings were committed with an 8- to 10-inch hunting knife. A bomb squad was brought in yesterday to approach Mohammad’s backpack after he was shot, and although no explosives were found, the contents were disturbing.

Along with two students, a vendor and a construction worker were injured Wednesday. The construction worker, Byron Price, is credited with distracting Mohammed as he began his stabbing spree with a noisy fight in a classroom.