Soon after the seven-hour confrontation ended with the dissidents surrendering, the government announced a midnight-to-5 a.m. curfew for the Manila area, with checkpoints set up and the military and police on red alert. The officers had demanded that Arroyo resign, accusing her of corruption.

Security forces used an armored personnel carrier to smash through the roped-shut front doors of the Peninsula hotel and fired volleys of warning shots. Clouds of tear gas rose from the lobby.

"Again and again, we have shown to the world the stability of the institutions of our democracy and the strength of this government," Arroyo said on national television. "Wrong and misguided deeds of the few do not speak for the people or the army and police."

"The full force of the law will be meted out without any concession. Additional charges are being prepared to hold accountable those who committed new crimes," she added.

The military men and their civilian sympathizers — including former Vice President Teofisto Guingona — were later led in groups to police buses. It was not immediately clear if they were being arrested or taken in for questioning. Several journalists also were detained.

"For the safety of everyone, we're going out ... because we cannot live with our conscience if some of you get hurt in the crossfire," Antonio Trillanes, a leader of the dissident officers, told reporters.

Interior Secretary Ronaldo Puno said he hoped the curfew would be enforced for only one night.

National Police Chief Avelino Razon said 101 people were arrested at the hotel, and that more were being sought. He said several documents were found there "that support the theory that this is a well-planned activity."

"There are other components... and we are pursuing the other groups that might try to continue to implement their plans," Razon said.

At least two people were injured in the assault on the hotel.

Escorted by military police, who apparently did not prevent them from leaving the court, the defendants marched to the hotel, pushed away guards at the entrance, and set up a command center in a second-floor function room. Armed guards were set up on stairways from the lobby.

The first shots erupted about 75 minutes after a deadline passed for the men to surrender. One dissident soldier, distinguishable by a red armband, crouched inside the hotel lobby, his finger near the trigger of an M-16 rifle.

After agreeing to surrender, Trillanes said he believed other officers in the military were fed up with government corruption and won't stay quiet.

"I am convinced that most of them sympathize with our cause," he said. "That's enough for us now. Eventually it will be their turn to live up to their mandate as protectors of the people."

Arroyo's spokesman, Ignacio Bunye, said the president has no concerns about the loyalty of the military as a whole.

"We're in touch with the different commands, and all of them expressed their support for the chain of command," Bunye said.

The trial for Trillanes and his co-defendants is over a 2003 insurrection in which troops commandeered a shopping center and hotel and demanded Arroyo's ouster.

The 27 officers on trial were among 300 soldiers who took over the upscale Oakwood hotel and a nearby shopping center in Makati in July 2003, rigging the area with bombs. They denounced the government and military corruption, but were accused of trying to stage a coup. They surrendered after the daylong uprising.

On Thursday, the coup defendants made phone calls and sent cell phone text messages urging crowds to support them.

But as the day wore on and hotel guests were evacuated, few people turned out for the latest effort to oust Arroyo, who has survived at least three coup plots and three impeachment efforts during nearly seven tumultuous years in power.