A tire-slashing spree is under investigation in the Northern Liberties section of Philadelphia.

Ten vehicles had flattened tires outside Philadelphia Fire Department Headquarters at 3rd and Spring Garden streets.

Investigators said Tuesday that six vehicles belong to the fire department and four are assigned to the Office of Emergency Management.

Police are looking for the vandals responsible for the damage.

Anyone with information can call or text Philadelphia police at 215-686-TIPS (8477) or submit an anonymous tip online.