Jing Hua Wu, 47, shot to death three of his co-workers at SIPort.

According to Herald Tribune two of the victims were identified as Sid Agrawal, SiPort Chief Executive Officer and Brian Pugh, the company’s Vice President of Operations. A woman was also killed.Police are withholding the woman’s name until her next of kin have been notified.

Wu had recently been laid off from SiPort, a fabless digital radio semiconductor company in Mountain View. Wu remains at large and police warned that he should be considered armed and extremely dangerous. Wu is described as 5-foot-7 and weighing 170 pounds, with black eyes and black hair.

Anyone who encounters Wu is urged to keep their distance and to call Santa Clara police at 408-615-4700. If Wu is in another city, witnesses should call 911 to reach that city’s police department.