A military explosives team has retrieved a live phosphorous flare left behind by search and rescue exercises in Marsh Lake two weeks ago.
An explosive ordnance disposal team retrieved the flare and destroyed it, said Sgt. Don Rogers, an RCMP spokesperson.
Phosphorous can cause serious burns if detonated.
The team also found several flares that were only partially deployed and floating on the surface of the lake.
The flares, used by search and rescue as signals, are meant to sink once they deploy.
But a half-deployed flare washed up on the shores of Marsh Lake last week, prompting a search for more.
In total, 18 flares were used during the exercises earlier this month.
Rogers did not know how many half-deployed flares were discovered.