GRANITE FALLS, Wash. (PIX11) — An 18-year-old high school student has died after agreeing to be punched by a fellow student in retribution for getting into a minor car crash outside a house party.

Both the victim and suspect, 18-year-old Michael Galen, went to Crossroads High School. Evidence suggests they have known each other for years and could be considered friends.

Snohomish County Sheriff’s Office reports Galen was arrested Sunday and charged with manslaughter.

Around midnight on Sunday, the victim backed a Honda into another car outside a house party, according to KCPQ.

The victim left, then returned shortly after to find the suspect waiting in the car that was damaged by the Honda.

Galen reportedly called the victim a “liar” for not immediately admitting to the accident.

Witnesses say the two agreed to resolve their differences by allowing the suspect to punch the victim in the face.

Reportedly, the two shook hands, smoked a cigarette, then the victim stood in the road and let Galen hit him once on the left side of his face with a closed fist.

The victim fell back and hit the road unconscious.

Some time later, a friend transported him to Providence Colby Hospital. He later died there.

When Galen was arrested Sunday, he also allegedly admitted to the punching.

Deputies say Galen has received death threats via social media.