(Reuters) - Myanmar police arrested a famous actor wanted for supporting opposition to a Feb. 1 coup, his wife said on Sunday, hours after two people were killed when police and soldiers fired at protesters in the second city of Mandalay.

The violence in Mandalay on Saturday was the bloodiest day in more than two weeks of demonstrations in cities and towns across Myanmar demanding an end to military rule and the release from detention of elected leader Aung San Suu Kyi and others.

The demonstrations and a civil disobedience campaign of strikes and disruptions show no sign of dying down with opponents of the military sceptical of an army promise to hold a new election and hand power to the winner.

Facebook on Sunday deleted the military's main page under its standards prohibiting the incitement of violence, the company said, as protesters again began to gather.

The actor, Lu Min, was one of six celebrities who the army said on Wednesday were wanted under an anti-incitement law for encouraging civil servants to join in the protest. The charges can carry a two-year prison sentence.

Lu Min has taken part in several protests in Yangon.

His wife, Khin Sabai Oo, said in a video posted on his Facebook page that police had come to their home in Yangon and taken him away.

"They forced open the door and took him away and didn't tell me where they were taking him. I couldn’t stop them. They didn’t tell me."

Military spokesman Zaw Min Tun, who is also the spokesman for the new military council, has not responded to repeated attempts by Reuters to contact him by telephone for comment.

He told a news conference on Tuesday the army's actions were within the constitution and supported by a majority of the people and he blamed protesters for instigating violence.

An activist group, the Assistance Association for Political Prisoners, said on Saturday 569 people have been arrested, charged or sentenced in connection with the coup.