Following the unveiling of a roadmap to reconciliation Monday, protest leaders demanded Prime Minister Abhisit Vejjajiva specify a date for Parliament's dissolution before they pulled out of their barricaded encampment in the heart of the Thai capital.

The political haggling has prolonged Thailand's nearly two-month-long crisis that has paralyzed vital areas of Bangkok, hammered the economy and ground government machinery to a near-halt. Clashes with soldiers and other violence have killed 27 people and injured nearly 1,000.

"If they don't go home, I'm not going to dissolve Parliament," Abhisit said in a live interview on ASTV. Other Thai media quoted Abhisit as saying the dissolution could take place Sept. 15 to 30.

"I repeat, I am not negotiating with anybody," Abhisit said in the interview, adding he was inviting everyone into a reconciliation process, "including the protesters."

Meanwhile, Red Shirt protest leaders demanded the opposite scenario.

"It's impossible for protesters to disperse before the government announces the Parliament dissolution," said Nattawut Saikua, a protest leader. "A mutual agreement needs to be reached first."

Abhisit noted the protest leaders earlier welcomed his reconciliation plan, which includes an offer of new elections on Nov. 14 — about a year before Abhisit's term would end — if the Red Shirts stop their demonstrations.

The timing of the dissolution has been a crucial issue, and the Red Shirts rejected Abhisit's earlier offer to dissolve Parliament by the end of the year. Abhisit has said he wants enough time in office to pass a national budget for next year.

But both sides want to be in control when a key reshuffle of top military posts occurs in September.

Abhisit said his five-point plan takes into account the protesters' main grievances. It includes respect for the monarchy, reforms to resolve economic injustice, free but responsible media to be overseen by an independent watchdog agency, independent investigations of violent incidents connected with the protests, and amendment of the constitution to be more fair to all political parties.

Protest leaders say Abhisit's proposal is too vague and they need clarity.

The Red Shirt demonstrators include supporters of former Prime Minister Thaksin Shinawatra who was ousted in a 2006 military coup following accusations of corruption and abuse of power. The protesters say Abhisit took power illegitimately through back-room deals and military pressure on legislators.

Protesters say they will remain camped in Bangkok's premier shopping district until Abhisit dissolves Parliament.

About 10,000 demonstrators packed the area Wednesday night, said army spokesman Col. Sansern Kaewkamnerd. He said the crowd size has been on a "downward trend" after highs last month of several tens of thousands.

On Wednesday, Thais put aside their political animosity to honor the country's ailing monarch on the 60th anniversary of his coronation, and his rare public appearance inspired thousands lining the streets to chant "Long Live the King!"

The highly revered King Bhumibol Adulyadej emerged in a wheelchair from a Bangkok hospital to preside over the ceremonies. The 82-year-old king, the world's longest reigning monarch, has been hospitalized for the past nine months with what the palace initially described as a lung inflammation.

The monarch made no comment on the political stalemate. Many Thais had hoped the king, who ascended the throne in 1946 but was officially crowned on May 5, 1950, might broker a peaceful solution to the crisis, as he did in 1973 when he stopped bloodshed during a student uprising and again in 1992 during antimilitary street protests.