Police officers used excessive force to unlawfully detain some 30 members of the opposition Homeland Party protesting in Yerevan on Tuesday morning, Arsen Babayan, a senior member of the party, said in a Facebook post.

“Among the detained activists are Khachik Galstyan, Sos Hakobyan, Babken Harutyunyan, Vardan Minasyan and Azat Zakaryan,” he wrote, accusing the police of grossly violating their right to peaceful assembly.

Armenia’s opposition groups began a large-scale civil disobedience campaign on Monday in a bid to oust Nikol Pashinyan and his cabinet, blocking streets and street intersections in central Yerevan.