SAN DIEGO (KGTV) -- Emergency crews and bomb squads were called to the UC San Diego campus after a bottle with a potentially explosive substance was found inside a classroom Wednesday evening.
According to the San Diego County Pulse Point, the incident was called in at 6:17 p.m. UCSD officials said there was an empty liter bottle containing a highly volatile substance discovered in a classroom at Pacific Hall.
UC San Diego Environment Health and Safety responded first but was unable to deem the bottle safe and eventually called San Diego Fire-Rescue, its Hazmat team, and a bomb squad for assistance.
A bomb squad with the local FBI field office also responded to the incident.
ABC 10News learned about 50 people were forced to evacuate the building as authorities worked to ensure the safety of the campus community and the lab was cleared of hazards in the immediate area.
At around 11 p.m., authorities deemed the substance inside the bottle – identified as diethyl ether – safe and reopened the building.
Authorities at the scene said the bottle appeared to have been left in the class accidentally; UC San Diego officials are investigating the incident.