USC

Slain University of Southern California professor was caring, students say

Slain University of Southern California professor was caring, students say

A graduate student arrested on suspicion of stabbing to death the professor who oversaw his work at the University of Southern California was quiet and didn't seem to have many friends but never showed any signs that something may have been wrong, several people who knew him at the university said Saturday.

David Jonathan Brown, a 28-year-old brain and cognitive science student, was arrested on a murder charge in the Friday attack on the Los Angeles campus. His mentor, Bosco Tjan, was killed inside the Seeley G. Mudd building, where he runs an intensive lab that studies vision loss.

Brown, one of just five students who worked in the lab, was arrested without incident, police...

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