Nicholas Spencer (Penobscot County Sheriff's Office)

A Greenfield man has been arrested in connection with a Milford accident in February in which his brother was killed.

Nicholas Spencer, 22, is charged with manslaughter and aggravated operating under the influence.

Spencer's 28-year-old brother, Matthew Spencer, died in the crash on the County Road in Milford, and a second passenger, 29-year-old Samuel Ketch of Milford, was injured. Nicholas Spencer sustained serious injures when the vehicle clipped a utility pole, rolled over, and caught fire.

Penobscot County Sheriff Troy Morton says following a thorough investigation by the department's Criminal Investigative Division, an arrest warrant was issued for Spencer, who turned himself in to authorities on Tuesday afternoon.

He is expected to make his first court appearance today..