A white firefighter is suing the Fire Department of New York (FDNY) for racial discrimination.

Lt. Daniel McWilliams, in a suit filed Friday in Brooklyn, said he was removed from a FDNY color guard because he was a white man at a ceremony honoring black firefighters, the New York Daily News reports.

The event in question was a memorial mass on Nov. 19, 2017 in honor of Vulcan Society members who had passed away. The society is an association for black firefighters within the fire department.