A Canadian Flag was stolen and the Collingwood clock tower damaged after an unknown number of people got onto the roof of town hall.

According to Collingwood OPP, the suspects gained access to the roof overnight on Monday into Tuesday.

A flag was taken and a clock mechanism was damaged. The clock has since been repaired.

Investigators are now pleading for any information that could lead them to the suspects.

In a separate incident, provincial police charged four teenagers with trespassing after they were spotted on the roof of town hall early Thursday morning.

Police say gaining access to rooftops is not only illegal, but extremely dangerous.