One person was killed and another suffered critical injuries in a single-vehicle crash on Interstate 95 near Medway Sunday morning.

The wreck occurred when the driver of a car, Sonja Ebron, 64, of Milton, Massachusetts, fell asleep at the wheel while traveling in the southbound lanes of I-95, Maine State Police said in a news release Sunday afternoon.

The crash near mile marker 238 was reported around 6:40 a.m. Police said the woman's vehicle left the highway and rolled twice before coming to a rest on its wheels in the median.

The driver's grandson, Giovanni Mykel Ebon-Burgess, 23, of Dorchester, Massachusetts, who was seated in the front passenger seat of the car, was pronounced dead at the scene, the release said.

Keon Ebron, 27, of Mattapan, Massachusetts, who was a passenger in the seat behind the driver, was ejected from the vehicle. Police said he was flown to Eastern Maine Medical Center in Bangor by LifeFlight and was listed in stable but critical condition.

Sonja Ebron and another passenger, Peta Thompson, 19, of Boston, suffered minor injuries. The two were treated at Penobscot Valley Hospital in Lincoln and then released.