Zim opposition leader reacts to political crisis
Zimbabwe's President Robert Mugabe remains confined to his home after the army took control of government offices and the state broadcaster.
The military action follows a power struggle over who might replace him as leader of the ruling Zanu-PF party.
Mugabe fired his vice-president recently, making the first lady, Grace Mugabe, his likely successor.
The military denies staging a coup but opposition leader, Tendai Biti says that's simply not true.
"This is a coup, there is no question about it. We condemn extraction of power from an elected civilian authority. Having said that, we must acknowledge the deep structural underlying causes that would have led the army to do what they are doing now," he says.
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After 37 years, Mugabe appears to be no longer in charge in Zimbabwe.
Sky News' David Bowden who is in Harare says there are armoured vehicles on the streets of the capital.
"As we left the airport, every car was checked including ours by military troops. They were heavily armed. They want to know who is leaving the country and who is coming in," he says.
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