A man is killed in a single-vehicle rollover crash early Friday in Denison.

The fatal wreck happened at about 3:25 a.m. on U.S. Highway 75, just north of the Morton Street exit.

Husband and wife, James Larry Agan, 67, and Sharon Agan, 56, of Mabank, Texas, were driving a 2004 Chevrolet Blazer when it left the southbound lane of the highway and rolled over.

The couple was ejected from the vehicle. James, who was in the passenger seat, was instantly killed in the crash.

Sharon, who was behind the wheel, was taken to Texoma Medical Center for treatment and was later released.

Denison Police Department said alcohol was not a factor in the crash.

The deadly crash remains under investigation.