A deputy fire chief in Cape Breton has apologized after some guests attended a Halloween dance at a fire hall dressed as members of the Ku Klux Klan.

Photos circulating on social media from Saturday’s event at the North Sydney Firefighters Club show four people wearing white sheets and white pointed hoods — garb synonymous with the American white supremacist group. One of the partygoers is holding a large cross.

MacLean said he was frustrated that the four guests were not only admitted into the dance but allowed to stay.