AMHERST  — A Londonderry police officer has been charged with felony aggravated driving under the influence of alcohol after his involvement in a two-car crash that killed a 21-year-old Manchester woman on Route 101 in Amherst on April 5 at 11:30 p.m., according to police. 

Sierra Croteau was pronounced dead at the scene after her 2008 Hyundai Santa Fe was hit head on by a 2018 GMC Sierra 2500 pickup truck driven by Tyler Berry of Amherst, according to police. 

Berry sustained serious injuries and was taken to Catholic Medical Center in Manchester, where he was eventually arrested, according to police. 

According to police, the truck was traveling westbound when it crossed the yellow center line and struck the Hyundai head-on, as it was traveling eastbound.

"The town of Londonderry and the Londonderry Police Department have been informed of the tragic events which unfolded last night in Amherst, New Hampshire involving Sierra Croteau and Londonderry Patrol Officer Tyler Berry," according to a statement from Londonderry police on Saturday. "First and foremost, we send our heartfelt thoughts and prayers to the family and friends of Sierra Croteau."

"It is our understanding that Tyler Berry has been arrested and charged in connection with this matter. As his employer, we will cooperate fully with the investigation and take appropriate action when more facts are known," the statement said.

After his arrest, Berry was released on personal recognizance. He will be arraigned in Hillsborough County Superior Court in Manchester on April 18.

It wasn't immediately known if Berry, a Londonderry police officer for less than two years, had a lawyer. He's been suspended from the department with pay, pending the outcome of the investigation, according to police.

Due to the seriousness of the crash, police said the Amherst Police Department requested that the New Hampshire State Police Collision Analysis and Reconstruction Unit, or CAR, respond. The CAR unit was assisted by Amherst Police as well as troopers from the Troop B Barracks, Amherst Fire/EMS and the Bedford Police Department.

Police said Route 101 in the area of Manchester Road was closed for about five hours.

Impairment appears to be a factor in the crash, police said, however, all aspects remain under investigation.

Berry is set to appear in court April 18.

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