A Concord woman was arrested Friday, Aug. 1, for setting fire to a storage barn that caused more than $100,000 in damage, her way of getting back at her estranged husband, officials said.

“I don’t believe she was trying to destroy materials. I think she was just trying to destroy her ex-husband,” Epsom Fire Chief Stewart Yeaton said.

Mary Margaret Yeaton, 43, of 19 Horseshoe Pond Road, is accused of setting fire to the Mihachik Builders barn on Route 4 in Epsom on July 21.

Some items stored inside the barn belonged to her estranged husband, Gary Yeaton, who rented storage space there. The couple had argued earlier that day, said the chief, who is a distant cousin of Mary Yeaton by marriage.

Chief Yeaton said the barn fire raged through the night, destroying the building’s roof and some of its contents. Almost 100 firefighters from 15 towns were called in to fight the fouralarm blaze, which caused more than $100,000 in damage.

In addition to arson, which alone could carry a sentence of up to 15 years in prison, Yeaton has been charged with one count of criminal threatening and one count of breach of bail.

She was also charged while in custody at Merrimack County Jail on a warrant out of Concord, in connection with an unrelated suspected arson fire.

Solving the Epsom fire quickly was a matter of teamwork, said Chief Yeaton, who collaborated with Merrimack County Sheriff’s Office, Concord police and the New Hampshire State Fire Marshal to wrap up the investigation in less than two weeks.

“The teamwork was incredible. Everybody worked together just putting the stuff together. We kept people right there at the fire scene for 48 hours to preserve the case because we knew we had such a strong case,” Yeaton said.

Merrimack County Sheriff Scott Hilliard cited “some pretty handy police work” at the heart of the investigation.

“When we looked at some videotape from a nearby neighbor, we found a car and we went from there,” Hilliard said. The case will now be turned over to the county prosecutor, Hilliard said.