COLUMBIA, N.H. – One person is deceased and five others remain hospitalized after a head-on collision in Columbia in Coös County.
Just after 9 p.m., Friday, June 19, 2026, State Troopers assigned to the Troop F barracks responded to a reported head-on crash on Route 3.
The preliminary investigation has determined that a 2021 Chevrolet Silverado was traveling southbound and a 2012 Chevrolet Camaro was driving northbound on Route 3 when, for reasons that remain under investigation, the Camaro crossed the centerline and struck the Silverado head-on, causing severe damage.
Several good Samaritans immediately stopped to assist the occupants of both vehicles. The Silverado was occupied by a family of five, including two adults and three children. All five were transported to Upper Connecticut Valley Hospital in Colebrook, two with non-life-threatening injuries and three with life-threatening injuries. All five were later transferred to Dartmouth Hitchcock Medical Center.
The driver and sole occupant of the Camaro, identified as Courtney Diamond, 25, of Pelham, succumbed to her injuries and was pronounced deceased at the scene.
Troopers were assisted at the scene by members of the Colebrook police and fire departments, New Hampshire Fish and Game Department, Pittsburg Police Department, Stratford Fire Department, and 45th Parallel EMS. Route 3 was closed for approximately three and a half hours while Troopers conducted their on-scene investigation.
All aspects of the crash remain under investigation. Anyone with information that may assist in the investigation is asked to contact Trooper Jacob Ingerson at (603) 846-3333 or Jacob.J.Ingerson@dos.nh.gov.