Polk County Sheriff's Office Traffic Homicide deputies are conducting an overnight fatal crash investigation.
At about 9:40 p.m. Saturday, a 2002 green, Ford Sport Trac, driven by Dakota B. Overstreet, of Lakeland, was traveling southbound on State Road 37 south of Mulford Road in Mulberry.
For unknown reasons, Overstreet's Sport Trac left the west side of the road, jumped a curb and began to rotate counter clockwise. The Sport Trac flipped, struck two palm trees, cutting them in two.
Overstreet was found hanging upside down restrained by his seatbelt inside Sport Trac. He was extricated and taken to Lakeland Regional Health, where he was listed in good condition.
A passenger in the Sport Trac was pronounced dead at the scene. The name of the passenger has not been released pending notification of next of kin.
Overstreet appeared to have been seat belted. The passenger did not appear to have been wearing a seat belt.
State Road 37 was reduced to one lane in each direction in the northbound side for approximately four hours.