Political violence in the campaign for this month's presidential run-off in Zimbabwe has spread to urban areas around the capital Harare, reports say. Some opposition supporters complained of being attacked in a township near the city. The area had been largely quiet while violence flared in rural districts. One opposition supporter told a local journalist he had been abducted and beaten by supporters of President Robert Mugabe's Zanu PF. Earlier, Mr Mugabe vowed the main opposition party would never lead Zimbabwe and said he was prepared to "go to war" for his country. He is due to face Morgan Tsvangirai, leader of the Movement for Democratic Change, in the 27 June run-off poll. Mr Tsvangirai was earlier released having been being arrested for the fifth time in just nine days.