The remains of four Americans, including US ambassador to Libya Chris Stevens, killed in an assault on the US consulate in Benghazi arrived Friday in the United States.

The remains were carried, one-by-one from the belly of a C-17 transport aircraft by seven marines in dress uniform, in transfer cases draped in the US flag into an aircraft hanger at Andrews Air Force base outside Washington.

A band played somber music as the cases were lifted into four black hearses parked inside the hanger before family members of the dead, officials and other dignitaries.

President Barack Obama was to follow Secretary of State Hillary Clinton in addressing the ceremony marking the transfer of the remains.

Stevens, information officer Sean Smith, and former navy seals Tyrone Woods and Glen Doherty were killed when a mob torched the US consulate in Benghazi on Tuesday.

[Image via Agence France-Presse]