The co-worker of a California State University administrator found fatally stabbed at the Fullerton campus' parking lot earlier this week was arrested Wednesday night, authorities said.

Chuyen Vo, 51, of Huntington Beach, was taken into custody at his home and is being held on a murder charge, Fullerton police Lt. Jon Radus said at a Thursday news conference.

Vo and the victim, Steven Shek Keung Chan, were co-workers at the university, but Fullerton Police Chief Robert Dunn declined to provide specifics on their relationship or how Vo was identified as a suspect.

Chan, 57, was found stabbed multiple times inside his Infiniti vehicle in a campus parking lot on Monday, the first day of fall semester classes. Investigators said he apparently was targeted.

Chuyen Vo, 51, allegedly killed Steven Shek Keung Chan, 57, on the California State University, Fullerton campus earlier this week. 

Chuyen Vo, 51, allegedly killed Steven Shek Keung Chan, 57, on the California State University, Fullerton campus earlier this week.  (Fullerton Police Department )

He was bleeding from his head and first responders performed life-saving measures, but he died at the scene.

“I come today to you with a heavy heart,” said university president Framroze Virjee. “We as a Titan family have suffered a devastating tragedy that’s hit close to home. Our hearts are with Steven Chan and with his family and everyone in the campus community.”

Police discovered a backpack underneath Chan's car containing zip ties, wigs and other materials that could potentially be used as a disguise, which seemed to suggest the attack was not random and could have been an attempted abduction.

According to police, the backpack belonged to Vo, who apparently acted alone. No motive for the crime has been provided.

University spokeswoman Ellen Treanor said the school had no reports of any problems between Chan and Vo.

Fullerton Police Chief Bob Dunn talks about the arrest in the stabbing death of a man at the California State University, Fullerton campus, during a news conference Thursday, Aug. 22, 2019, in Fullerton, Calif. (AP Photo/Chris Carlson)

Fullerton Police Chief Bob Dunn talks about the arrest in the stabbing death of a man at the California State University, Fullerton campus, during a news conference Thursday, Aug. 22, 2019, in Fullerton, Calif. (AP Photo/Chris Carlson)

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Chan worked as a consultant with the school. He previously worked on campus as the director of budget and finance and student services for university extended education before he retired in 2017.

Fox News' Vandana Rambaran and The Associated Press contributed to this report.