NEW YORK — FDNY firefighters have recovered a third body from a demolished Bronx apartment building that caught fire following a massive explosion, officials said Saturday.

The body was found inside the rubble of the fire-ravaged E. 209th St. apartment building in Norwood just before 12 p.m., FDNY officials said.

The deceased is an adult, but wasn't immediately identified Saturday. It wasn't clear whether the victim was a man or a woman, officials said.

On Friday, firefighters recovered the body of a woman believed to be Mary Ann Martin, a missing 65-year-old grandmother whose husband also died in Wednesday's blaze.

Martin's niece Tashaila Parks, who has been keeping a vigil at the destroyed Bronx building near Parkside Place, broke down in tears Friday as firefighters brought the body out.

Martin lived in a third-floor apartment with her 70-year-old husband, Lester — right above the apartment where an explosion sparked the five-alarm fire that gutted the building.

Lester's body was found Wednesday as firefighters fought the blaze.

Parks believed the body recovered Friday was her missing aunt, who they have been frantically searching for ever since the explosion tore through the building at 12:30 p.m. Wednesday.

"(It's been) 48 hours since the fire started and we still have no location of my aunt Mary Ann Martin," Parks said just hours before the body was recovered Friday. "We keep getting told that they did find somebody, they didn't find somebody. We just need to know."

"They had been together forever, for more than 40 years," Parks said of her aunt and uncle. "They were very much still in love."

Parks said Mary Ann was home at the time of the explosion.

"My aunt usually doesn't go anywhere on Wednesdays. That's, like, kind of part of her routine," said Parks. "So, to our knowledge, she would still have been inside."

Firefighters were forced to wait before recovering any remains as they shored up the compromised building, officials said.

FDNY Fire Marshals were only allowed into the building on Friday and have just begun their investigation into what sparked the massive blaze, a department spokeswoman said.

It's believed a gas explosion led to the fire, FDNY sources said.

Lester Martin's body was found in a collapsed section of the building and had to be temporarily stored in an alley before being transferred to the hospital in a body bag late Wednesday, family members and sources said.

Surveillance footage obtained by The New York Daily News shows the explosion erupting on the building's second floor, sending glass and other debris rocketing across the street.

In another clip, a man can be seen walking on the opposite side of the street when he suddenly ducks, a flying window frame narrowly missing him as debris lands all around. A parked car visible in the frame takes the brunt of the shrapnel, which shatters its rear windshield, the video shows.

Firefighters arrived within three minutes, but by that time multiple floors were already engulfed in flames.

"There was some sort of explosion," FDNY Chief of Department Joe Esposito said Wednesday. "It blew out window frames, it blew some of them across the street, and when our members got up to the second floor, some of the apartment doors had been blown off their hinges."

"This makes it very difficult to confine the fire while we're also conducting searches," he added. "It was a very unusual and extremely dangerous position for our firefighters."

Tenants told officials that they had smelled gas in the building before the fire.

Dramatic photos taken from the scene show a firefighter on a tower ladder plucking a panicked child from a fire escape. Fourteen people were injured — two critically — in the conflagration and taken to local hospitals. Six firefighters were among the injured, officials said.

The blaze was declared under control at 3:30 p.m. but small fires reignited throughout the rest of the afternoon, FDNY officials said. The fire was finally out by Wednesday evening.