Canadian soldier killed by friendly fire last week?!

Investigators are looking into whether friendly fire is to blame for the deaths of a Canadian and an American soldier in an Afghanistan firefight last week.Private Robert Costall, 22, and U.S. National Guard First-Class Sergeant John Stone, 52, died last Wednesday in a battle with Taliban insurgents in the Sangin district of Helmand province. Eight Afghan National Army soldiers also died in the attack, and three other Canadians were wounded.All three countries have now launched investigations into the violent battle, which began last Tuesday night and stretched well into Wednesday, when Taliban fighters attacked an Afghan army resupply convoy near a remote base in Helmand. About 30 Taliban rebels were killed.The idea that friendly fire may have been to blame for the deaths was raised after an early review of the battle, but senior commanders wouldn’t divulge any further details as to why they think it’s a possibility.