A Bowdoinham man and his sister were killed this morning when their car hit a pickup truck on Meadow Road in Topsham.

Randy Bishop, 50, and his sister, Donna Pottle, 39, of Bowdoin, were pronounced dead at the scene of the crash, said Lt. David Tripp of the Maine State Police.

The driver of the pickup truck, Andrew Thiebeault, 19, of Topsham, was treated for minor injuries at Parkview Hospital in Brunswick and released, Tripp said.

The accident occurred around 4 a.m., as Bishop and Pottle were driving north in their 1999 Saturn SL sedan. Tripp said the car crossed the center line and slid sideways into the opposite lane and into the path of Thiebeault’s southbound 1997 Dodge 2500 truck.

“The passenger side of the Saturn struck the front end of the Dodge, killing the two occupants of the Saturn,” Tripp said.

The crash remains under investigation.

11:15 a.m.

Two people were killed early this morning when a car and a truck collided on Meadow Road in Topsham just after 4 a.m.

A man and a woman riding in a car were headed north when they lost control and crossed into the path of a Dodge 3/4-ton pickup truck, State Police said. The man and the woman were pronounced dead at the scene. The driver of the pickup was treated for minor injuries at a local hospital and released.

Police say excessive speed may have been a factor. The crash occurred near Bisson Farm. Meadow Road was closed for about three hours.

Police have not released the names of those killed in the crash pending notification of family members.

9:07 a.m.

State Police have taken over the investigation into a crash that killed at least one person. The crash happened on Meadow Road at 4 a.m. in Topsham.

The Sagadahoc County Sheriff’s Office and Topsham police have turned the investigation over to State Police who are reconstructing the accident.