Six people from the same family were taken to hospital Monday morning, including four children, after an explosion at a campground near Slave Lake, Alta.
RCMP said they were called to the Marten River Campground at around 7 a.m., along with the Slave Lake fire department.
Officials said two adults and four children were initially taken to a local hospital but were later transported to Edmonton by air ambulance in stable condition.
RCMP said the individuals were between the ages of six and 41, and their injuries are serious but not life-threatening.
The explosion left extensive damage to a fifth-wheel trailer at the campground. The back of the trailer was blown away and debris could be seen scattered around the camp site.
RCMP said fire investigators determined the source of the explosion was a one-pound camping propane tank. The small, green one-time-use tank leaked while it was stored inside the trailer, police said.
“When the gas met an ignition source it resulted in an explosion,” RCMP said in a media release.
Marten River Campground is about 35 kilometres north of Slave Lake on the shores of Lesser Slave Lake. The scene is about 275 kilometres north of Edmonton.