UPDATE: 2 Arrests in Bronx Drug House Explosion That Killed Fire Chief Michael Fahy

UPDATE, Sept. 28, 6:30 p.m.: A second suspect, identified by the NYPD as Garivaldi Castillo, has been arrested in connection to Monday's deadly Bronx explosion and charged with two counts of criminal possession of marijuana, an NYPD spokeswoman said Wednesday evening. Castillo "will be walked from the 50th Precinct at 7 p.m.," the spokeswoman said. However, police still haven't confirmed or denied anything about Julio Salcedo, the other man being held in New Jersey in connection to the explosion. It's also unclear if there's any link between the two suspects — although DNAinfo crime reporter Murray Weiss was told by one of his police sources that Salcedo "paid the bills, and was a caretaker for the farm, but he is not the mastermind or the guy who set it up."

Original story below.

CLIFFSIDE PARK, NJ — A police source in the small town of Cliffside Park confirmed that officers with the New York City Police Department (NYPD) came through town Tuesday and nabbed the suspected tenant of the Bronx drug house that exploded earlier in the day, killing a 17-year veteran of the Fire Department of the City of New York (FDNY) and injuring more than 20 others.

The suspect, Julio Salcedo, was being held Wednesday at the Bergen County Jail in Hackensack, New Jersey, on a "fugitive from justice" warrant, awaiting an extradition hearing that could send him back to New York City, a spokesman for the jail told Patch. "It has not been established when [the hearing] will occur," the jail spokesman said.

A spokesman for the NYPD, however, would say only that "a person is being questioned" in the case.

According to the New York Post, NYPD detectives, with the help of the feds, quickly identified the tenant of 300 West 134th St. as Salcedo, 34, and tracked him down in Cliffside Park by afternoon — then arrested him on a warrant for a petty crime so they could take him into custody for questioning. (Much like police in New Jersey recently did in the case of the Chelsea bomber.)

"At this point, he's still not in our system yet," a spokesman for the Bronx District Attorney's Office said of Salcedo on Wednesday afternoon. "It's still in the police investigation phase." If and when police do determine charges should be brought against him, the spokesman said, "he'll be extradited" and handed over to the Bronx DA.

State records show that a man named Julio Salcedo was charged in Bronx Supreme Court with imprisoning and strangling someone earlier this year.

The two-story home at 300 West 134th, in the Bronx's Kingsbridge neighborhood, exploded early Tuesday morning while FDNY firefighters and NYPD officers were investigating a reported gas leak and what they soon discovered to be an indoor marijuana grow operation at the home.

Michael Fahy, chief of the FDNY's 19th Battalion and a father to three young children — two boys and a girl, ages 6, 8 and 11 — was killed by roof debris from the explosion.

NYPD Commissioner James O'Neill said at a Tuesday press conference that Bronx detectives had been looking into a possible marijuana grow at the apartment for as many as two weeks before the deadly blast.

Fahy was remembered by city leaders as a "rising star" in the FDNY, a "devoted father" to his young kids and, in his final hours, a "hero."

"Chief Fahy bravely served the city for 17 years, following in the footsteps of his father, Thomas J. Fahy, also a battalion chief," FDNY Commissioner Daniel Nigro said Tuesday. "His death is a painful reminder of the sacrifice our job all too often demands."

NYC Mayor Bill de Blasio ordered that all flags throughout the city be flown at half-staff until Fahy was laid to rest.

Hundreds of firefighters came out Wednesday morning for a memorial service for Fahy at his firehouse in the Bronx. A black and purple "bunting" was placed on the front of the firehouse in honor of his service.

This is a developing story. Refresh the page for updates.

Lead photo via the NYC Mayor's Office