GREELEY — Police have arrested three boys accused of causing $2,000 worth of damage to windows and screens at a Greeley elementary school.

The Greeley Tribune reports (http://bit.ly/1fHgZwA ) officers were called to Jackson Elementary School on Friday night after employees in the building said they heard someone on the roof. Police say they saw the boys come down off the roof and run.

They were arrested a short time later and face charges of second-degree trespassing and felony criminal mischief.

The boys' names have not been released. Two of them are 13 years old and one is 14.