ADDIS ABABA (Reuters) – Ethiopian authorities on Friday arrested the spokesman of a political party promoting the interests of the Amhara ethnic group, the party president said, in a move linked to what the government has described as a failed regional coup attempt.

The government confirmed more than 260 arrests in total, which it said were related to the failed attempted power grab on Saturday in the region of Amhara.

Christian Tadele of the National Movement of Amhara (NAMA) was arrested in his home region of Amhara, party president Desalegn Chane told Reuters. NAMA was founded last year and has become an increasingly popular rival to the Amhara party that is part of the national ruling coalition.

“Our spokesman is arrested along with the other three members of the party,” he said. “We are trying to communicate with the regional officials asking for their release.”

On Friday afternoon, the Ethiopian prime minister’s office tweeted, “212 suspects apprehended in connection with the coup attempt in the Amhara region while 43 individuals detained in Addis Ababa – investigations still ongoing with potential for more arrests.”

Dozens of people were killed when a rogue state militia tried to seize power in Amhara’s capital Bahir Dar, the spokesman for the Amhara region has said.

The region’s president, his aide and the attorney general were all shot dead. The same night, the army’s chief of staff and a retired general with him were killed in the capital Addis Ababa in a related attack, the government said.