Person of interest questioned in house explosion that killed fire battalion chief

NEW YORK -- Authorities in New York say they were questioning a person of interest in a house explosion that killed a battalion chief who had been considered a rising star in the Fire Department of New York.

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A firefighter on the scene of a house explosion in the Bronx on Sept. 27, 2016. NYC Mayor's Office

Michael Fahy was killed Tuesday when a row house exploded as he was supervising an evacuation following a report of a gas leak. Authorities are looking into whether the building was being used to grow marijuana.

Authorities didn’t provide details on the person being questioned. But a source told CBS New York the man in custody was renting the second floor and fled the scene as firefighters arrived. He has not been charged.

Investigators worked into the night, collecting bags of evidence, the station reports.

The two-story house and adjoining homes in the Bronx had already been emptied of occupants and fire personnel had been on the scene for an hour when the 7:30 a.m. blast jolted neighbors awake, tore off the building’s roof and hurled pieces of wood and brick into the street.

Fahy, a 17-year fire department veteran and father of three, was directing operations from the street when he was hit by falling debris, authorities said.

“It is a reminder of the dangers that our first responders face every day, the dangers that the men and women of the FDNY face and the bravery with which they do their job,” Mayor Bill de Blasio said after meeting with Fahy’s family at a hospital.

Police Commissioner James O’Neill said that about two weeks ago police had received information about possible drug activity on the block. Part of the investigation into the explosion will include a probe of whether the home was a marijuana “grow house,” he said.

The cause of the blast hasn’t been determined. But across the country, marijuana is often grown legally in enclosed spaces using propane gas that powers carbon dioxide generators to boost production. New York law enforcement authorities could not immediately say whether that might have been the setup in the Bronx house.

A source told CBS New York that fire marshals are looking into the possibility of an illegal gas line hookup.

The force of the blast moved mugs in a cabinet several houses away, said resident Mary Lahti, who also had dust covering her furniture.

Fahy, who was promoted to chief in June 2012, had a doctorate from New York Law School. He got his undergraduate degree from New York’s Binghamton University in 1994 and his master’s degree at the Center for Homeland Defense and Security’s Naval Postgraduate School, according to education records.

“He was on the rise; he was a star,” fire Commissioner Daniel Nigro said.

On Wednesday, FDNY members draped a purple and black bunting on the exterior of the firehouse where Fahy served as tribute to him.

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Firefighters honor fallen battalion chief Michael Fahy at his firehouse in the Bronx Wednesday, Sept. 28, 2016 CBS New York

The commissioner said he was a contemporary of Fahy’s father, who had been a fire chief before his son.

Residents milled around in the aftermath: debris strewn on the street and covering parked cars; the former house a mangled heap of walls, wiring and twisted metal. Authorities said the house had renters, and they were looking into who they were.

“The explosion felt like a bomb on my house,” said Nicholas Kolotouros, who lives across the street. “We got scared, and we jumped out of bed. We didn’t know what it was.”

Within minutes, police told him to leave his house, one of a lineup of two-story homes on a tree-lined street.

Lahti woke up around 6:30 a.m. “smelling something odd, but I wasn’t sure what it was,” she said. “It didn’t smell like gas, really.”

She went back to sleep. The explosion woke her up an hour later.

“I thought it was a car that ran into the house, the way the house shook,” she said. “I was jolted out of bed.”

When she looked out the window, she said, “it was a lot of smoke, a lot of smoke.” Hours later, occasional whiffs of smoke still floated over the neighborhood.