Two persons were injured, one seriously, in a single-car crash in London Township early Saturday morning.

Two persons were injured, one seriously, in a single-car crash in London Township early Saturday morning.

The Monroe County Sheriff’s Office reported the accident occurred about 12:03 a.m. Saturday on Grames Rd. east of Townsend Rd. A preliminary investigation revealed that a 22-year-old Ypsilanti woman was driving a gray 2004 Ford Escape westbound on Grames with a 19-year-old Monroe man as a passenger in the front seat.

While headed westbound, the driver lost control of the vehicle for unknown reasons, causing it to overturn, a sheriff’s report said. During the crash, both occupants were ejected. The SUV came to rest in the roadway on its side. The driver of the vehicle was taken to St. Joseph Mercy Hospital in Ann Arbor, where she was listed in critical condition. The passenger was also transported to the same hospital, where he was listed in stable condition.

Neither occupant of the vehicle was wearing a seatbelt at the time of the accident.

It is unknown at this time if alcohol was a factor, the report said.

Both Monroe Community Ambulance and the London-Maybee-Raisinville Volunteer Fire Department assisted at the scene.

The crash remains under investigation by Deputy Sheriffs Nick Burhart, Paul Galloro and Alec Preadmore from the Sheriff’s Office Traffic Safety Services Bureau along with Deputy Art Parran from the Uniform Services Division. Anyone with information about the crash is asked to call 734-240-7557.