A hit-and-run driver who struck and killed a Connecticut state trooper on a highway last year pleaded guilty to a manslaughter charge Tuesday, agreeing to an 18-year prison sentence over the objection of the trooper's widow.

Alex Oyola-Sanchez pleaded guilty in the hit-and-run crash that killed Connecticut State Police Trooper First Class Aaron Pelletier in May on Interstate 84.

The man who is accused of hitting and killing Connecticut State Trooper First Class Aaron Pelletier on Interstate 84 in Southington in May, then leaving the scene, has accepted a plea deal. Alex Oyola-Sanchez,