Security forces remain on alert and increased numbers of police and soldiers are evident around the city, although the government has said it will gradually ease security measures and hopes to lift the state of rebellion on Monday. The government has ordered about a dozen opposition politicians arrested for inciting the protesters. It says it has intelligence reports indicating the plot leaders wanted both Arroyo and Estrada killed during the attack. Estrada is in custody on various corruption charges, although he has denied any wrongdoing. Four of the alleged plot leaders are running in May 14 Senate elections, Mr Arroyo's first big electoral test since she took the reins of power in January.
Security forces see their continued freedom as a potential threat in the lead up to the vote.
Under the state of rebellion, authorities have the power to make arrests without a warrant and groups of five people or more have been banned from gathering outside Malacanang palace. There is absolutely no basis for charging me with anything, not even rebellion,'' The Philippine Daily Inquirer newspaper quoted Honasan as saying on Saturday. Honasan went into hiding after Tuesday's failed attempt to storm Malacanang. Both are among the four alleged plot leaders who are running for Senate seats. Senator Juan Ponce Enrile, who is seeking re-election, and former ambassador to the United States Ernesto Maceda are already in custody.