The Abelson-Bass-Yalem physics building had to be evacuated at around 9:30 a.m. on Wednesday, Feb. 24 due to a mechanical issue that created smoke inside, according to an email from Jim Gray, the vice president for campus operations.

An issue with equipment in a mechanical room that serves the building and others in the science complex led to the evacuation, according to the email sent to students after the incident.

Waltham police and multiple fire trucks from the Waltham fire department arrived at the scene. They inspected the building, determined the cause of the problem and allowed everyone back into the building once conditions were acceptable.

Buildings “adjacent” to the physics building were evacuated “as a precautionary measure,” said Gray. There were no injuries resulting from the incidents, according to his email.