Merrimack police photo Jason Trepanier, 44, of Merrimack

Marcel Trepanier, whose address wasn’t provided by police, is charged with one count each of simple assault and resisting arrest, both misdemeanors.

The two sons – Jason Trepanier, 44, and Robert Trepanier, 35 – were each charged with one count of simple assault-domestic violence, also misdemeanors, police said.

All three were transported to Merrimack police headquarters for booking, then later released on personal recognizance bail pending their arraignments.

Jason and Robert Trepanier were scheduled for arraignment in Merrimack district court, while their father is to be arraigned on Dec. 27, according to police.

Merrimack police photo Marcel Trepanier, 71, of Merrimack

Officers were sent at about 3 p.m. Monday to a Merrimack residence, the address of which wasn’t provided, after receiving a report that an assault had just taken place.

Police said “it was apparent” that there had been an altercation between the two sons. While the officers were conducting their investigation, Marcel Trepanier allegedly “became belligerent with one of the officers, and grabbed and pulled the officer toward him,” police said.

He also “tried to pull his arms away” from officers attempting to take him into custody, resulting in the resisting charge, police said.

Meanwhile, officers through their investigation, determined Jason and Robert Trepanier had been involved in an argument, which police said led to a physical altercation.

During the skirmish, police said, Robert allegedly struck Jason in the hand with a putty knife, and Jason in turn allegedly struck his brother in the head.

Merrimack police photo Robert Trepanier, 35, of Merrimack

Dean Shalhoup can be reached at 594-1256, dshalhoup@nashuatelegraph.com, or @Telegraph_DeanS.