By Sarah Toms
BBC News, Manila
Philippines police have arrested a retired general after he proclaimed himself leader of a revolutionary government.
Gen Abat was taken away by plainclothes police officers
General Fortunato Abat has called on President Gloria Arroyo to step down after allegations she cheated in last year's election.
On Wednesday, the government ridiculed Gen Abat, suggesting the 80-year-old was entering his second childhood.
But one day later, police arrested the general, a former defence secretary.
They took him and three companions to the national police camp in Manila. State prosecutors are preparing sedition charges against him and two members of his revolutionary government.
The government has played down talk of a plot to unseat President Arroyo in a coup allegedly planned for last weekend.
Two colonels with close ties to Gen Abat have been removed from their commands, for being suspected of involvement in the plot.
Gen Abat did not resist arrest when police interrupted a meeting at the Manila Country Club, where he had been holding office as president since Wednesday.
He denied he had plans to oust President Arroyo, saying "our movement is leading a peaceful event, not a coup or military takeover".
He also said he was not worried about sedition charges as he is already facing the same charges from months ago, when he formed a movement calling for changes to the political system.
Gen Abat said he had only been invited for questioning and was planning to return to his club to meet other retired generals and civil society groups.
Talk of coup plots are nothing new in the Philippines - two presidents have been overthrown by popular uprisings supported by the army.
But the recent rumours show President Arroyo is not yet clear of the worst crisis of her four years in office, when allegations of corruption and vote rigging first erupted in June.