This booking photo released Wednesday, Dec. 13, 2017, by the Manchester Police Department shows Mark Heath, 32, arrested on second-degree murder charges in the death of a 2-year-old Jacob Pelletier, who died of blunt force trauma to the abdomen on Monday in Manchester.
This booking photo released Wednesday, Dec. 13, 2017, by the Manchester Police Department shows Mark Heath, 32, arrested on second-degree murder charges in the death of a 2-year-old Jacob Pelletier, who died of blunt force trauma to the abdomen on Monday in Manchester. Credit: Manchester Police Department via AP

New Hampshire authorities have arrested a 32-year-old man on second-degree murder charges in the death of a 2-year-old boy.

An autopsy determined that Jacob Pelletier died of blunt-force trauma to the abdomen on Monday.

Attorney General Gordon MacDonald said Mark Heath of Manchester was arrested Wednesday night. One second-degree murder charge alleges that he acted knowingly; the other alleges that he acted recklessly.

MacDonald said the boy was found unconscious in his family’s apartment. He was taken to a hospital, where he was pronounced dead.

Heath was expected to be arraigned Thursday. It wasn’t immediately known if he had a lawyer and a phone number couldn’t be found for him.