SIOUX FALLS, S.D. (AP) — Firefighters in Sioux Falls have discovered a dead man in a burning vehicle. The Argus Leader reports firefighters and police were called to a parking lot in the central portion of the city just before 5 a.m. on Thursday for a burning vehicle. The vehicle was fully engulfed when they arrived. They found a man dead inside the vehicle. He was in his mid-30s. Authorities haven’t released his name pending notification of next of kin. He was the only occupant of the vehicle. The cause of the fire is under investigation.