DULUTH, MN (KDAL) - Vandals caused damage at the Chester Bowl Chalet early Monday morning. Police were called around midnight when one of the live-in caretakers reported a disturbance. Several windows had been smashed out by rocks, tires were slashed on a vehicle and two lights were also broken. Earlier in the evening, the caretaker had a run-in with four juveniles who appeared to have been drinking. They were asked to leave the park but threatened to return. Duluth Police are investigating the incident.