AUGUSTA (AP) – Maine State Police were investigating whether an Augusta man intentionally drove his car the wrong way on Interstate 95 early Monday and crashed head-on into another vehicle.

Jeffrey Blais, 53, was killed instantly when his car collided with a vehicle driven by Shannon Casey, 32, of Portland shortly before 2 a.m. Casey was flown by helicopter to Central Maine Medical Center in Lewiston with critical injuries.

Blais is believed to have driven north in the southbound lanes for about four miles before his car smashed into Casey’s vehicle and burst into flames, said Maine State Police Lt. Don Pomelow. Casey had just ended her shift with the Waterville Police Department, where she works as a crisis worker.

Minutes before the crash, Augusta police received a report of a vehicle similar to Blais’ car parked on the Route 3 bridge over the Kennebec River with the driver outside the car yelling.

Police were unable to locate the vehicle, and investigators were looking into whether Blais drove his car north on Route 3 and drove the wrong way onto I-95 on purpose, said Steve McCausland, spokesman for the Maine Public Safety Department.

“We will try to retrace Blais’ footsteps and any conversations he had with family and friends that might make the answers clearer,” McCausland said.

Police had received no calls from motorists about a vehicle headed in the wrong direction on the divided highway, Pomelow said.

The highway’s southbound lanes were closed for more than four hours, with vehicles being diverted to an exit north of the crash site before the road was reopened at about 6:30 a.m.

A blood sample was taken, as is done in all vehicular fatalities, but the results were not immediately available, said Pomelow.

The crash comes a little more than a month after a double fatality on the Maine Turnpike in Ogunquit in which a Wells woman allegedly drove south in the northbound lanes for five miles before crashing into a limousine.

Donna Bartlett, 38, has been charged with manslaughter and aggravated drunken driving in the crash. Bartlett, who suffered a broken ankle, is free on $10,000 bail.

Killed in the collision were the limo driver, James McLaughlin, 65, of Gorham, and a passenger, Cooper Campbell, 15, of Scarborough. Campbell’s father, Steven Campbell, 48, survived with injuries including broken ribs.