Police in Lebanon, N.H., were already looking for Anthony K. Boisvert in connection with two suspicious fires, including one that destroyed a historic local church, when they arrested him Sunday night for allegedly stabbing two people.

On Sunday, police found a 52-year-old man and a 66-year-old woman seriously wounded at Boulders Condominiums on Wolf Road. Both were acquaintances of Boisvert, 27, and ­identified him as their attacker, according to Lebanon Chief of Police Richard Mello.

“He attacked these two people without warning and stabbed both multiple times,’’ Mello said. “They’re fortunate they’re both still alive.’’

Both victims are expected to survive, authorities said.

Boisvert fled on foot, and was arrested more than an hour later. He is charged with two counts of first-degree assault, along with three counts of arson, police said.

“During the course of the current investigation, it was determined that Boisvert was also responsible for setting a fire on Jan. 16, 2016, at 174 Hanover Street Extension,’’ police said in a statement. “That building was abandoned at the time and was a total loss.’’

Boisvert had also been a person of interest in two recent fires. On Dec. 28, a three-alarm fire destroyed the historic First Baptist Church of Lebanon, which was built in the 1860s. A short time later, a couch in the basement of a home was set on fire, but a sprinkler system quickly put it out.

The congregation at is now gathering at a lodge a block away. On Sunday, Richard Ellis, secretary at the Masonic Lodge, attended the first service and said it was “heartwarming.’’ Members of other churches and denominations attended in support, he said.

“The nine stained glass windows in the room were glowing with everyone in here,’’ he said.

Charles Therriault, master of the Masonic Lodge, said there has been a outpouring of support for the church.“The ­resolve of the congregation is remarkable.’’

The church’s 1,800-pound bell is being stored by a local lumber company. Larry Guaraldi, a semi-retired local insurance agent, has started a GoFundMe page, and an account at Mascoma Savings Bank called the “Lebanon First Baptist Church Memorial Fund.’’

“If anyone is down and out, they were there to help them,’’ Guaraldi said of First Baptist. “They helped people with rent, community suppers for the less fortunate. They’re just first class.’’ In a statement on the website, Pastor Rick Pinilla said the building will be replaced. “More to the point this is a reminder to us that the Church is not a material building,’’ he wrote. “It is a community of people being built by God.’’

Cristela Guerra can be reached at cristela.guerra@globe.com. Follow her on Twitter @CristelaGuerra.