Police say that three children are responsible for starting a wildfire in Burnaby, B.C., last month, and mischief charges are now being considered.

Mounties say that the youngsters, aged 12 and 13, are believe to have started the July 29 fire at the foot of Burnaby Mountain. The blaze grew quickly and prompted the evacuation of several nearby homes.

RCMP say they are looking into charges against the trio.

"Despite minimal damage, this fire was very costly and a severe drain on emergency service availability," Sgt. Ted De Jager said in a press release.

The fire was discovered after residents reported seeing smoke near Production Way and Forest Grove Drive at around 5 p.m. Authorities say the blaze started in some dry brush in a vacant lot and spread to one hectare in size.

Members from nine units of the Burnaby Fire Department and firefighters from the B.C. Forest Service, aided by a dozen fire trucks and three helicopters, were quick to the scene and made short work of the fire.

Police say that more than 30 officers were required to control traffic, evacuate homes and investigate the fire.