UCLA Molecular Science Building evacuated due to unknown environmental hazard

Staff and students inside of the University of California, Los Angeles' Molecular Science Building were forced to evacuate Thursday after reports of an unspecified "environmental hazard" were reported. 

No injuries were reported, though the building was evacuated out of an abundance of caution. 

Both UCLA campus police and fire department units rushed to the scene at around noon after learning of the hazard. A Los Angeles Police Department bomb squad and Los Angeles Fire Department personnel were also called to the scene.

The remainder of UCLA's campus remained open throughout the day. 

Charles E. Young Drive South was closed between Tiverton and Manning Drives for an unknown duration as authorities investigated the hazard. 

The incident was reported to be resolved at 9:45 p.m., per a campus-wide alert sent to UCLA students. 

"No reported injuries are associated with this incident," the alert said. "Emergency crews are departing."

The environmental hazard that caused the response was unknown.