* Astronomy

A loud explosion in Burnaby, British Columbia, on March 22nd, has authorities scratching their heads.

At about 11:05 pm the blast rattled windows and awakened neighbours near the Chaffey Burke Elementary School on Abbey Avenue.
Police responded with officers and a dog but came up empty handed. All they could find was a small hole in the ground.
No damage has been reported and there were no injuries.

Source