Police used tear gas and water cannons to break up a key rally of the main opposition Movement for Democratic Change in the Zimbabwean capital, Harare, today, arresting dozens of people.
Reports indicated that police prevented opposition supporters from attending the rally at which the leader of the Movement for Democratic Change, Morgan Tsvangirai, had planned to launch his presidential campaign.
Police tried to block the rally last week, arguing they did not have sufficient manpower to guarantee law and order.
The Movement for Democratic Change obtained a court ruling yesterday allowing them to go ahead and hold the rally, but police ignored the ruling.
There was no immediate word on injuries and no confirmation from police about the arrests.