BruinAlert: Shooting at Engineering 4. Go to secure location and deny entry (lockdown) now!
Students and staff at the University of California have been ordered to "go to secure locations and deny entry", in a tweet put out by university officials.
Los Angeles Police Department have confirmed two deaths in the shooting.
The campus remains on lockdown.
Police confirm 2 dead in shooting at UCLA. Police are sweeping Engineering IV building for a possible shooter. Watch for updates.
The shooting takes place a week before final exams.
Boelter Hall is near the center of a campus that occupies 419 acres in a bustling part of Los Angeles.
The two victims in the University of California shooting are believed to have been killed, according to NBC reports.
Bahjat Alirani who studies bioengineering at the university posted the following on Twitter: "Police yelling at everyone in Boelter to evacuate immediately."
I was in Boelter and I just see police spread around in the building yelling at everyone to run. #UCLA
"I was in Boelter and I just see police spread around in the building yelling at everyone to run."
The university has more than 43,000 enrolled students, according to its website.
Two victims are reported to have been shot at the University of California where a gunman is believed to be on campus.
The conditions of the victims are not known.
The campus remains on lockdown and people on site are being advised to seek shelter.
Armed police are responding to reports of a possible shooter at a Los Angeles university.
The University of California campus is currently on lockdown following the reports.
Campus media relations officer Rebecca Kendall said that police were at Boelter Hall, a science building.
Reports of the shooting came in at 17:55 (9:45 local time).
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