Two people were severely burned in a propane explosion Monday afternoon. Spokane firefighters responded to a tent near North Waterworks Street and East Surro Avenue around 3 p.m. Monday for reports of injured people. Two victims were quickly taken to the hospital because of the severity of their injuries. Firefighters determined the explosion was a result of a propane leak. A propane cylinder was connected to a makeshift stove used for warmth inside the tent. The propane bottle connection had a slow leak that filled the tent with flammable gas. The explosion was triggered when one of the victims lit a cigarette inside the tent. A release from the Spokane Fire Department said the two people were living in the tent, which was part of a larger encampment of about 40 people. There were no other injuries reported as a result of the explosion.