Professor William S. Klug. Photo: UCLA

Citing law enforcement sources, CBS News reports that the two people who died in today’s shooting at UCLA were an engineering professor and a student “apparently despondent about grades.”

The network identified the professor as William Klug, who specialized in computational mechanics and received a Ph.D from Caltech in 2003. The name of the student, who is also believed to have been the shooter, has not been released.

Early reports suggested at least three people had died in the shooting, which authorities are now calling a murder-suicide. From KNBC:

William Klug was in an office inside Boelter Hall on the Westwood campus before 10 a.m. when he was reportedly shot and killed by an unidentified student who then took his own life, sources told NBC4.

A gun and a note were found near the bodies, LAPD Chief Charlie Beck said during an afternoon press conference.

“I’m just outraged,” a student who knew Klug told KNBC. “I’m mad that someone would do that to a young professor who just started his career at UCLA. It’s just a shame.”

UPDATE 8:45 p.m.: The L.A. Times reports that UCLA has cancelled all engineering classes for the rest of the week.

“The campus remains in a state of sorrow over the tragic shooting and loss of two members of the Bruin community this morning,” executive vice chancellor and provost Scott L. Waugh said at a press conference Wednesday evening. “We’re trying to restore the campus to order as quickly as possible.”