A Woolwich couple died in a three-vehicle crash Saturday night on Route 1 in Woolwich.

Robert S. Martin, 70, and his wife, Carolyn W. Martin, 76, were killed in the crash between the Taste of Maine restaurant and George Wright Road about 6:07 p.m., the Sagadahoc County Sheriff’s Office said.

Robert Martin was driving south when his car was hit head-on by a Chevrolet Tahoe, which veered into the southbound lane as it was traveling north, the sheriff’s office said. A Ford Explorer traveling south was unable to avoid the crash and hit the Tahoe.

Martin was pronounced dead at the scene, and his wife was pronounced dead at Central Maine Medical Center in Lewiston, where she had been flown by a medical helicopter.

The driver of the Tahoe, Danielle Ward, 33, of Rockport and three of her seven passengers, all children, were treated for serious but non-life-threatening injuries at Maine Medical Center in Portland.

The Explorer was driven by William Kring, 63, of Dudley, Massachusetts. Neither Kring nor his passenger was injured.

Sagadahoc County Sheriff Joel Merry said the cause of the crash is not yet known.

“This was an unfortunate accident that resulted in the death of a local elderly couple. Our condolences go out to their family,” Merry said.

It could be several days before deputies can piece together the actions that caused the accident, authorities said.