Manchester woman killed in 101 crash, Londonderry officer charged with DUI

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Amherst, NH, Police Station/FILE

AMHERST,  NH — On Friday, April 5, 2019 at approximately 11:30 p.m., Amherst Police responded to a serious motor vehicle collision on Route 101 in the town of Amherst. Upon their arrival they located two vehicles at the scene. The first vehicle was identified as a 2018 GMC Sierra 2500 pick-up truck. The second vehicle was identified as a 2008 Hyundai Santa Fe.

Based upon the initial investigation, the GMC pick-up was traveling west when it crossed the yellow center line and struck the Hyundai, head-on, as it was traveling east. The operator of the GMC pick-up was identified as Tyler Berry, age 27, of Amherst, a Londonderry police officer.

Berry sustained serious injuries and was taken to Catholic Medical Center in Manchester. He was eventually arrested at the hospital and charged with felony aggravated driving under the influence of alcohol.

The operator of the Hyundai Santa Fe was identified as Sierra Croteau, 21, of Manchester. Croteau sustained fatal injuries and was pronounced dead at the scene of the crash. Due to the seriousness of the crash, Amherst Police Department requested that the New Hampshire State Police Collision Analysis and Reconstruction, (C.A.R.) Unit respond.

The Collision Analysis and Reconstruction, (C.A.R.) Unit was assisted on scene by Amherst Police Department as well as Troopers from the Troop B Barracks, Amherst Fire/EMS and Bedford Police Department. Due to the collision, Route 101 in the area of Manchester Road was closed for approximately 5 hours.

At this time it appears that impairment was a factor in this crash, however all aspects remain under investigation.

On Saturday Londonderry Police released the following statement:

The Town of Londonderry and the Londonderry Police Department have been informed of the tragic events which unfolded last night in Amherst involving Sierra Croteau and Londonderry Patrol Officer Tyler Berry. 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.

Anyone with further information related to this collision, or who witnessed this collision are encouraged to contact Trooper First Class Bryan Plamondon at 603-223-8677 or email him at

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