LINCOLN, Neb. (AP) — Officials have canceled classes for the rest of the day after two fires were set at Lincoln High School in the capital city.

Concerns over smoke in the building led to the cancellation on Thursday morning. No injuries have been reported.

Students and school workers were evacuated twice. The first time was after someone started a fire in a trash can. The second time was after someone set fire to wrestling mats stored in a hallway near one of the gymnasiums.

District operations director Scott Wieskamp says officials hope to let people back into the building later Thursday to collect personal items.