The Canadian Forces released the results of its investigation into the March 28, 2006 friendly fire death of Pvt. Robert Costall and said it will not be pushing for charges. Pte. Costall and U.S. Sgt. John Thomas Stone were killed by an unidentified American machine gunner during "an attack of unprecedented intensity by Taliban forces from multiple directions," a statement said. The report was released more than a month after the results of a U.S. investigation were made public.