Police escorted about 400 veterans as they silently marched through downtown Harare. The veterans, Mugabe loyalists who fought in the bush war that helped end white minority rule in Rhodesia, often are used to intimidate opposition supporters. They also spearheaded the often violent takeover of white farms in recent years.

Mugabe's embattled ZANU-PF party was to hold a critical meeting Friday to discuss strategy as it confronts massive losses in elections expected to cause a presidential runoff.

Zimbabwe's main opposition party says that Mugabe has "unleashed a war" in his bid to stay in power after party offices were raided and foreign journalists detained on Thursday.

The Zimbabwe Electoral Commission had not released official election results by Friday, despite increasing international pressure. Mugabe was said to be pondering conflicting advice from his advisers on whether to quietly cede power or face a run-off, both humiliating prospects for the 84-year-old president.

Diplomats said Thursday's events indicated he might be considering a third option: declaring a state of emergency and suppressing the opposition.

Diplomats in Harare and at the United Nations said Mugabe was planning to declare a 90-day delay to a presidential runoff to give security forces time to clamp down. The law requires a run-off be held within 21 days of an election, but Mugabe could change that with a presidential decree, a Western diplomat in Harare said.

The opposition Movement for Democratic Change says its leader, Morgan Tsvangirai, won the presidency outright, but that it is prepared to compete in a run-off.

On Friday, the splinter faction of the opposition indicated it would support Tsvangirai in a runoff.

"Whatever formation is there to remove Mugabe, we are there to support it," Abednico Bhebhe, spokesman for the faction headed by Arthur Mutambara, told The Associated Press.

MDC secretary-general Tendai Biti said hotel rooms used as offices by the opposition at a Harare hotel were ransacked Thursday by intruders he believed were either police or agents of the feared Central Intelligence Organization.

"Mugabe has started a crackdown," Biti told The Associated Press. "It is quite clear he has unleashed a war."

Biti said the raid at the Meikles Hotel targeted "certain people ... including myself," but that Tsvangirai was "safe."

Also Thursday, heavily armed riot police surrounded and entered a Harare hotel housing foreign correspondents and took five away, lawyers said.

Zimbabwe lawyer Beatrice Mtetwa said two of the journalists were jailed and would be charged Friday with practicing journalism without licenses. She said the other three were released.

Bill Keller, executive editor of The New York Times, said Pulitzer Prize-winning correspondent Barry Bearak was among the reporters initially detained. The identities of the other reporters had not been determined and it was not clear whether Bearak was among the reporters still being held.

The New York-based Committee to Protect Journalists expressed alarm and called for the reporters' immediate release.

The U.S.-based National Democratic Institute said Thursday that one of its staff members was detained by Zimbabwean authorities at Harare's airport as he tried to leave the country. Dileepan Sivapathasundaram, a U.S. citizen, had been working with local groups who were monitoring election monitors, the group said.

The nonprofit organization said it had been denied access to and information about Sivapathasundaram and called for his release.

President Bush's national security spokesman, Gordon Johndroe, said Friday that White House officials were "troubled by reports we are hearing on the ground in Zimbabwe."

"Journalists and NGOs should be permitted to do their work," Johndroe said. "The people of Zimbabwe need a resolution soon to the electoral situation. The will of the people needs to be respected."

On Thursday, Tsvangirai tried to reassure security chiefs who vowed a week ago not to serve anyone but Mugabe, according to a person close to the opposition leader. But a meeting with seven generals was canceled when the officers said that they had been ordered not to attend, the person said.

The man, who requested anonymity because of the issue's sensitivity, gave The Associated Press a copy of a letter signed by Tsvangirai that promises generous retirement packages for those unwilling to serve in a MDC government. It also promises not to take back farms given to officers under Mugabe's land reform program, except in cases in which an officer got several farms or if land was being neglected.

Mugabe has ruled Zimbabwe since his guerrilla army helped force an end to white minority rule and bring about an independent Zimbabwe in but his popularity has been battered by an economic freefall that followed the often-violent seizures of white-owned commercial farms in 2000.

___

Associated Press Writer John Heilprin at the United Nations contributed to this report.

Copyright 2008 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.