A man suspected of attempting to murder his ex-girlfriend by burning down the Brooklyn brownstone in which she lived was arrested late Monday night after he was tracked down by fire marshals, department officials said yesterday.

The suspect, Charles Norbert, 52, used flammable liquid to ignite the fire in Bedford-Stuyvesant that left his ex-girlfriend with serious burns and three firefighters injured, fire officials said.

Mr. Norbert allegedly committed arson in an attempt to kill his former live-in girlfriend, a 52-year-old who was not identified, after she put an end to their relationship and forced him to move out of her apartment, fire officials said.

“This suspect showed absolutely no regard for public safety and placed so many lives at risk with a twisted plot for revenge,” Commissioner Nicholas Scoppetta said in a statement.

The fire department responded to the blaze at 744 Lafayette Ave. at about 12:46 a.m. on Monday. While Mr. Norbet’s ex-girlfriend was able to escape the late-night blaze, she suffered second-degree burns over about 35% of her body, fire officials said. She is in stable condition at NewYork-Presbyterian Hospital.

Fire marshals targeted Mr. Norbet as the main suspect after discovering he had violently threatened his ex-girlfriend and several other tenants in the building following the breakup, fire officials said.

Investigators were able to track him down at a friend’s house hours after the fire, fire officials said. More than 60 firefighters assisted in fighting the blaze that was brought under control at about 2:15 a.m.