University of Kansas police are investigating several acts of vandalism at campus buildings this month.

The vandalism began July 12 when someone caused $5,000 damage in a bathroom at Wescoe Hall and benches on the building’s ground floor.

Damage was later reported at Blake Hall, Fraser Hall, Malott Hall and Stauffer-Flint Hall. The total damage was estimated at $9,000.

The Lawrence Journal-World reports all the buildings were unlocked because people were working inside. It’s not clear if all the vandalism incidents are related.