Bosnia’s security agencies are investigating a Serbian group that the national government said Tuesday was a paramilitary unit formed to create “a problem” for those opposed to Bosnian Serb President Milorad Dodik.

Members of “Serbian Honor” caused an uproar when they marched in full combat gear in the Republika Srpska capital, Banja Luka, during a January 9 military parade to mark a national holiday in one the country’s two autonomous regions. Bosnia is split into the Federation, shared by the Bosnian Croats and Muslim Bosniaks, and the Serb-dominated Serb Republic.

“Serbian Honor” is registered in neighboring Serbia but has an informal wing in the Bosnian Serb Republic, whose leaders say they are in the process of registering as a charity there.

“For me this is a paramilitary formation,” Security Minister Dragan Mektic told reporters Tuesday. “The way they showed up is dangerous and their claims to be a charity are ridiculous.”

Dodik’s office said the reports were false and dangerous.