FDNY firefighter killed by roadside bomb in Afghanistan

A city fireman was among four Americans killed by a suicide bombing in Afghanistan, officials said Tuesday.

The firefighter, identified by sources as Christopher Slutman, a U.S. Marine reservist who works at Ladder 27 in the Bronx, was killed Monday during a roadside bombing near the Bagram Air Base north of the Afghan capital.

Two other U.S. service members and an American contractor were also killed in what is the deadliest incident against military forces in Afghanistan this year, officials said.

RELATED: Photos of the FDNY

The Taliban, which is in ongoing talks with the U.S., claimed responsibility for the attack.

The base in Bagram district is located in northern Parwan province and serves as the main U.S. air facility in the country.

In their claim of responsibility, the Taliban said they launched the attack and that one of their suicide bombers detonated his explosives-laden vehicle near the NATO base.

Monday's attack comes as U.S. officials had been negotiating a peace deal with the Taliban to end this 18-year-long war which has claimed the lives of close to 2,400 American service members.

An email to the FDNY for comment was not immediately returned.

Last year, FDNY Lt. Christopher Raguso and FDNY Fire Marshal Christopher (Tripp) Zanetis died when their Pave Hawk helicopter hit a power line and crashed near the Syrian border.