POLICE are investigating after two children, believed to be nine-years-old, were seen throwing bricks from a building site in Chapelford.
Officers say the youngsters were seen on the roofs of new houses on Stanford Court, off Jamestown Avenue.
Bricks were being dropped from the top of the buildings.
When Warrington West NPU attended, the children had left the area.
The incident was reported at 7.38pm on Thursday.
Police believe the incident could be linked to wider anti-social behaviour on Pasedena Avenue, reported around 15 minutes later.
Officers are trying to trace those responsible.
Anyone with information can call CSO Jo Coburn on 101.