A home under construction went up in flames overnight.

The fire began at 10:20 p.m. Monday on 62nd Ave. near 4th St. in Riviere-des-Prairies.

Several dozen firefighters rushed to the scene and were soon able to extinguish flames at the semi-detached house, but not before the structure was badly damaged.

Nobody was hurt.

The Montreal police arson squad has taken over the investigation since there was no apparent cause for the fire.