The FDNY confirmed Tuesday that one of its lieutenants died early Saturday morning of a heart attack after a 24-hour tour.

According to the FDNY, 54-year-old Lieutenant Brian Sullivan died after suffering the heart attack at his home in Monroe, New York.

"I was shocked. Brian was obviously in good shape, he was a strong guy," Thomas McHugh of Squad Company 41 said at a news conference. "He was the heart of the firehouse, he always had a good word to say."

The department said Sullivan, who worked with Squad Company 41 in the Melrose section of the Bronx, had responded to seven emergencies during a 24-hour tour that ended earlier in the day Friday, including a kitchen fire in a Mott Haven apartment.

Sullivan, a 27-year veteran of the fire department, had complained of pain and discomfort to fellow firefighters throughout the tour but continued responding to calls, according to the FDNY.

Fire department officials said the 54-year-old went back home after his tour ended but was rushed to Orange County Regional Medical Center later in the evening due to the heart attack. He was pronounced dead around 12:10 a.m. Saturday.

"He was always willing to teach, he was always laughing," McHugh said.

Purple bunting was hanged from Sullivan's firehouse in the afternoon as fellow firefighters and community members gathered to honor him.

Sullivan worked for Squad 41 in the Bronx, as well as Squad 251 in Brooklyn.

"The city and the entire Department mourn the loss of this brave individual who spent his career protecting life and property and rescuing others from harm," Fire Commissioner Daniel Nigro said in a statement.

A wake will be held at the Smith, Seaman and Quackenbush funeral home in Monroe on Wednesday from 6 p.m. to 8 p.m., and again on Thursday, from 1 p.m. to 3 p.m. and from 6 p.m. to 8 p.m.

Funeral services will be held Friday at Sacred Heart Church, also in Monroe, at 11 a.m.

Sullivan leaves behind his wife, Irene, and two daughters, 22-year-old Nicole and 17-year-old Samantha.

The FDNY Foundation has created a scholarship fund for Sullivan's daughters. Answer the Call, an organization that helps widows of fallen firefighters, is also donating $25,000 to Sullivan's wife and plans to raise enough money to support her and her family for life.