Story highlights Police called to investigate a group of bearded men in Sweden

Flag was thought to resemble the ISIS banner

'Bearded Villains' is an international group, with local chapters

(CNN) It's not often that a bit of facial hair can get you into trouble. But for a group of Swedish men, their beards -- and a familiar-looking flag -- had them mistaken for an ISIS terror cell.

The Swedish chapter of Bearded Villains , an international "brotherhood of elite bearded men" was meeting at a ruined castle for a photo shoot featuring the organization's black-and-white flag when a concerned motorist mistook them for an ISIS cell, according to local media reports and a member's posts on social media.

Braehus Castle, in Granna, is around 280 kilometers (174 miles) southwest of the Swedish capital, Stockholm.

Authorities were summoned, but after the confusion was cleared up the Villains were free to continue with their hirsute activities.

The flag does bear a passing resemblance to the ISIS banner, largely due to its monochrome color scheme, but local police quickly ascertained that the 30 or so bearded men who were "hugging and laughing," according to a Facebook post by member Andreas Fransson, weren't terrorists.

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