HARDIN COUNTY, Tenn.--- The Tennessee Wildlife Resources Agency responded to a call about a boat exploding on Saturday, July 27, 2019, around 11:15 a.m. The incident occurred approximately one-half mile upstream from the boat ramp at Pickwick Landing State Park. Officers report a single vessel was traveling upstream with seven occupants aboard when the incident occurred. Four of the occupants were injured, one was carried by helicopter to a nearby trauma center, and the three other injured occupants were transported by ambulance to a local hospital. The exact cause of the accident is still under investigation.