NORTH AURORA, Ill. (CBS)– Twenty school buses were vandalized over the weekend in North Aurora.

According to police, the buses were vandalized at a district bus storage and maintenance facility, located at 220 Adler Drive, between 5:30 p.m. Friday and 6 a.m. Monday.

READ MORE: Chicago Undercover Police Officer, Sergeant Honored For 'High Level Of Professionalism'

Police said a mechanic confirmed 20 buses were missing catalytic converters.

READ MORE: Naperville District 203 Among Suburban High Schools Dealing With Spikes In COVID-19

The buses were not in service Monday morning. The district superintendent said those parts are very expensive to replace. He said it’ll cost more than $40,000 to fix them. And he said besides the money, the toughest part is telling families the school can’t help get their kids gt to class.

“It wasn’t like somebody made a bad decision and ran off the road,” said Superintendent Jeff Craig. “Or we didn’t pay our insurance or we didn’t pay our gas bill. It was a negative piece that negatively impacted a lot of kids.”

MORE NEWS: Loretto Hospital Gets COVID Vaccine Again, Following Controversy Over Non-Eligible People Getting Shots

Police are looking at surveillance video to help identify a suspect.

CBS 2 Chicago Staff