A Marine and longtime member of the FDNY in the Bronx was killed while serving in Afghanistan.

Christopher Slutman, a 15-year FDNY member, was among three American service members killed by a roadside bomb on Monday. He leaves behind his wife, Shannon, and three young daughters.

Officials say Slutman was the fourth FDNY member to die while serving in Iraq or Afghanistan since 2003.

News 12 was outside Ladder 27 where the FDNY was holding a bunting ceremony for Slutman. Mayor Bill de Blasio also ordered all flags to be lowered to half-staff.

He described Slutman as a hero, saying the firefighter was given the fire chiefs memorial medal in 2014 for rescuing an unconscious woman from a burning home in the South Bronx.