A fire broke out at Berkeley High School on Thursday afternoon, prompting an all-school evacuation, according to an email from Berkeley High principal Erin Schweng.

The trash can fire started in the men’s restroom on the first floor of the G Building and was extinguished by a staff member “fairly quickly,” according to an email from Schweng. Berkeley Fire Department spokesperson Keith May said in an email that the fire had already been extinguished by the time the Fire Department arrived on scene about 1:32 p.m.

Nobody was injured by the fire, and the cause of the fire is still unknown, according to May.

Schweng added in her email that the entire school was evacuated for 20 to 30 minutes about 1:15 p.m. Classes resumed later Thursday afternoon once the fire had been extinguished.

“It took some time for the fire department to blow the smoke out of the hallway so that classes could re-enter,” Schweng said in her email.