CHICAGO (CBS) — Students at an elementary school in the Hyde Park neighborhood were being relocated to another school, after a gasoline spill Wednesday morning.

Police said the gasoline spill happened inside Bret Harte Elementary School, at 1556 E. 56th St., around 7:15 a.m. A Fire Department spokesman said a gas can tipped over in the first floor vestibule sometime overnight, causing a strong odor of gasoline.

The spill happened before students arrive for the day, and no injuries were reported.

Firefighters used fans to air out Harte Elementary, and the school was closed for the day.

As a precaution, students were bused to nearby Hyde Park High School. They will be bused back to Harte for dismissal at 3:15 p.m.