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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A former neighbour accused of supplying weapons to the couple who killed 14 people in California this month has been indicted by a federal grand jury on terror-related charges.
Enrique Marquez, 24, is accused of conspiring with San Bernardio gunman Syed Rizwan Farook in 2011 and 2012 to support a terrorist attack that was never carried out, as well as making false statements to federal authorities.
Farook, 28, and his wife Tashfeen Malik, 27, killed 14 people and injured 21 others in an attack on an office Christmas party on December 2.
Prosecutors have said there is no evidence Marquez knew about the San Bernardino attack, but Marquez is accused of buying two of the guns that were used in the shooting rampage.
He is charged with conspiring to provide material support to terrorists; two counts of making a false statement regarding the guns; and one count each of marriage fraud and making false statements in relation to an alleged sham marriage to a distant relative of Farook's.