06/04/2013 01:21 EDT | Updated 08/04/2013 05:12 EDT

20 homes damaged after Quebec quarry explosion

Quebec provincial police and the province's workplace health and safety board are investigating after an explosion damaged several homes in a small community near Thetford Mines, Que.

The explosion occured in a granite quarry in the community of Saint-Joseph-de-Coleraine on Monday afternoon.

No one was hurt, but the blast broke windows and cracked some of the bricks of nearby homes.

Provincial police spokesman Richard Gagné says no homes were evacuated.

He says workers at the quarry often use dynamite during excavation.

Gagné says investigators are on the scene today trying to find out what went wrong in the routine explosion.