Zimbabwe police arrest three Tsvangirai staff

Police have raided the party headquarters of Zimbabwe's Prime Minister, Morgan Tsvangirai, and arrested a youth leader and two security guards.

It appears to be the latest crisis in the unity government, in which power is shared by Mr Tsvangirai, leader of the Movement for Democratic Change, and President Robert Mugabe's Zanu-PF party. Last week, Mr Tsvangirai said he wanted to pull out of the government after police arrested one of his top political allies, the Energy Minister Elton Mangoma.

Lawyers are trying to find out why the MDC staff were held.