According to UCSF officials, the victim became involved in an altercation with a suspect inside the lobby of a medical building at 11 Irving St., part of UCSF's Parnassus Heights campus, around 6:15 a.m.
After leaving, Bajjalieh collapsed on the sidewalk along Irving Street. A nurse, however, saw him and tried to revive him with CPR. Bajjalieh was then taken to the hospital's emergency department, where he died, UCSF officials said.
UCSF officials haven't said what kind of injuries Bajjalieh suffered, but said he and the suspect did not appear to know each other.
On Wednesday, UCSF police arrested the suspect on suspicion of murder and robbery and booked him into the city's jail. Although the suspect's name hasn't yet been released, UCSF officials released a surveillance image of him.
RELATED: 'Perfect child': Family of 6-year-old boy shot, killed watching SF fireworks asks for justice
"I saw all this yellow tape and the cops saying you can't come in here," says Gabrielle Lim who works at UCSF and had to use a different entrance to get inside.
VIDEO: SF woman attacked in front of home by man believed to be homeless
"It's crazy times that we're living in for sure but outside of a hospital it's pretty surprising," says Thomas Forbes who was at the medical building visiting a patient when we talked to him.
Police haven't given a motive or said how the person died. Those who work at UCSF Parnassus say they are scared. Jennifer Dudley says she was recently assaulted by a man on her way to work.
"I was attacked by someone who appeared to be homeless or someone who was just released from the ER," says Dudley. She went on to say, "there is a lot of homeless people that hang out in the corridor, they sleep on the benches, I saw people doing drugs in there, exposing themselves in the morning, they come and there is no one regulating the situation."
RELATED: Tech billionaire funding network of 1,000 security cameras around SF addresses privacy concerns
It's unclear if the suspect is homeless but police are hopeful that someone recognizes him.
ABC7 did Crime Map the area within a half-mile of the UCSF Parnassus Campus and found there have been four assaults and one robbery within the past month.
Read full press release below:
This incident is still under investigation by the UCSF Police Department. Anyone with information regarding this event, especially anyone who may have witnessed the incident, is encouraged to contact UCSF PD at 415.476.1414 in reference to case number 2020-897.
Stay with ABC7 News for the latest details on this developing story.
Bay City News contributed to this report.