At least six people were killed and one critically injured in a string of car crashes across Maine – from York to Aroostook counties – over the Veterans Day weekend.

In two of the crashes, the victims were not wearing seat belts, police said.

A crash Sunday night in Hampden killed an elderly woman and left four people, including two children and two adults, injured, according to WLBZ-TV. The woman was driving the wrong way on U.S. Route 202 and hit a second car, the Bangor television station reported. Southbound traffic near the intersection of Coldbrook Road had to be diverted for several hours.

Elsewhere in Penobscot County, Maine State Police said one man was killed and another critically injured when the driver of a car they were riding in fell asleep and crashed the vehicle on Interstate 95 early Sunday morning near Medway.

A family from Massachusetts was heading south when their 2006 Honda Civic, operated by Sonja Ebron, 64, of Milton, Massachusetts, went off the southbound lane of the highway and rolled over several times before coming to rest in the median strip, said Stephen McCausland, spokesman for the Maine Department of Public Safety.

Giovonni Mykell Ebron-Burgess, 23, of Dorchester, Massachusetts, was pronounced dead at the scene by the East Millinocket and Lincoln Ambulance Service crew.

Another passenger, Keon R. Ebron, 27, of Mattapan, Massachusetts, suffered serious injuries and was flown by Life Flight helicopter to Eastern Maine Medical Center in Bangor. He was listed in critical condition there Sunday night.

Sonja Ebron and another passenger, Peta A. Thompson, 19, of Boston, suffered minor injuries. They were both treated and released from Penobscot Valley Hospital in Lincoln.

State Trooper Cooper Plaisted is investigating the accident, which took place at 6:41 a.m. in Township 2, Range 9.

In southern Maine, a man was killed Saturday night in a single-car crash in Alfred.

State police said Joseph Barbarino, 31, of Alfred was driving on Mouse Lane when his car hit a ditch and overturned several times before coming to rest against a tree just before 10 p.m.

Police said Barbarino was thrown out of the car’s rear window, and that he was not wearing a seat belt.

Early Saturday, a man and woman were killed in a crash in Indian Purchase Township, outside Millinocket in Penobscot County.

Kevin Baker, 44, and Julie Columbo, 50, both of Millinocket, were killed when their pickup truck went off the Golden Road and down a steep hill, state police said.

Police said speed and alcohol were factors in the 12:30 a.m. crash. They were not wearing seat belts, police said. Baker was believed to be the driver, police said.

Late Friday night in Perham, in Aroostook County, Kyle Goding, 29, of Perham was killed when his minivan overturned several times off Route 228. Speed and alcohol were factors in that crash, state police said.