Mourners packed the wake for FDNY Battalion Chief Michael Fahy, who died in the line of duty this week when a house exploded in Kingsbridge.

Fahy, a father of three and 17-year FDNY veteran, was responding to a report of a gas leak at 300 West 234th St. 

Hundreds of FDNY members attended the afternoon service. So did top officials including Bronx Borough President Ruben Diaz Jr. and the commissioners of both the FDNY and NYPD.

FDNY Commissioner Daniel Nigro described Fahy as a "rising star." In just 13 years, the fallen firefighter had risen to the rank of battalion chief -- the quickest out of anyone currently serving in the department.

Nigro also announced that Fahy will be posthumously promoted to deputy chief.

"It's something well deserved," Nigro said. "I have no doubt that in a number of years, Chief Fahy would have led this department."

The wake was scheduled at the Flower Funeral Home at 1714 Yonkers Ave. in Yonkers Thursday and Friday from 2 to 4 p.m. and 7 to 9 p.m. 

The funeral is set for Saturday at 11 a.m. at Annunciation Church at 470 Westchester Ave. in Yonkers. 

Fahy lived in the Crestwood section of Yonkers with his wife and children. He grew up in North Rockland.