Mystery Of Arctic Explosion And Dead Whales Likely To remain

An explosion that allegedly killed several whales in Canada's Northwest Passage in late July will likely remain a mystery.

A Transport Canada helicopter on board the Canadian Coast Guard ship Henry Larsen did a fly over of north Baffin Island on Friday and found no sign of dead whales or an explosion, says Summer Halliday, a spokeswoman for the Department of National Defence.

Defence officials were put on alert earlier this week when an Inuit ranger camped in the area passed on a report from a civilian colleague who heard the explosion and spotted the black cloud of smoke that followed. The report to DND suggested that several whales had been killed.