The Cal State Fullerton staffer fatally stabbed during a targeted on-campus attack has been identified — as authorities revealed that a backpack holding an incendiary device was discovered under his car.

Steven Shek Keung Chan, 57 — who served as the university’s director of budget, finance and student services for university extended education from 2009 to 2017 — had returned to campus as a special consultant in early 2019 “to provide his sage guidance and wisdom,” university president Fram Virjee said in a statement.

Authorities found Chan inside his silver Infiniti sedan in the campus parking lot around 8:30 a.m. Monday bleeding from his head, with stab wounds all over his body, police said.

Chan, of Hacienda Heights, could not be saved, and was pronounced dead at the scene, authorities said.

Meanwhile, a backpack believed to belong to the attacker was found under the car — holding a knife-like weapon, items that could be used for a kidnapping and an incendiary device, according to Fullerton police Lt. Jon Radus.

“It was basically like a bottle with flammable liquid and a potential igniter,” Radus said, adding that the device had not been set off.

A 911 caller told authorities that the attacker was in his 20s with black hair, wearing black pants and a black shirt.

Authorities used dogs to search for the man but couldn’t find him, police said.

Investigators believe Chan was specifically targeted, and “will be working around the clock to identify the suspect involved,” Fullerton police said in a Facebook post.

The motive remains unclear, according to Radus.

While Monday marked the start of the new academic year, no students were on campus because weekend classes don’t start until Saturday and weekday classes begin on Monday, the university said.

That same day, campus police were filming active-shooter scenarios in Pollack Library and other locations as an emergency preparedness activity. The filming was canceled as a result of the stabbing.

“I did not have the honor of knowing Steven personally or working with him directly, but over the past few hours, in providing a shoulder to lean on for those who were close to him, it is clear that he was beloved for his commitment to and passion for both Cal State Fullerton and our Titan Family,” Virjee said in his statement.

With Post wires