UNIONPORT, the Bronx (PIX11) — Four people died, including a 10-month-old girl and two children, when a two-alarm fire ripped through a Bronx home Sunday morning, according to the FDNY.

The fire broke out on the second floor of a two-story house at 2165 Quimby Ave. near Castle Hill Avenue in Unionport just after 6 a.m., officials said. Several others were injured, including three firefighters, officials said.

Police said a 10-year-old boy and a 12-year-old boy died at the scene. A man, 22, and the child were pronounced dead at the hospital, police said.

A man, 41, and a woman, 21, remained in critical condition at the hospital, police said.

“Today is a sad day for our Castle Hill community as we learned of an early morning two-alarm residential fire that has left us in mourning,” Bronx Borough President Vanessa Gibson said. “We are heartbroken at the loss of lives, including children and those residents who are in the hospital with serious injuries.” 

The heavy smoke and flames quickly took over the entire home and parts of the adjacent building, officials said. More than 100 firefighters and emergency personnel responded to the scene.

“(It was a) very serious fire, very, very serious,” FDNY Assistant Chief Kevin Brennan said.

Authorities are investigating the cause of the fire. The victims have not been identified.

The Red Cross was assisting the displaced residents.

Note: An earlier version of this story had the incorrect ages of the victims. The story has been updated after the NYPD released more information.