Speculation is rife about a possible coup against Zimbabwean president Robert Mugabe, after tanks were seen travelling towards the country's capital.
A total of four tanks were seen heading towards Harare, according to Reuters. Local media reports that state TV broadcaster ZBC has also been sealed off.
Although there have been widespread suggestions that the move is part of a coup, there has been no official confirmation of the reason for the tank deployment.
The news comes a day after the head of Zimbabwe's armed forces warned he was prepared to "step in" to stop a purge of the ruling Zanu-PF party.
Gen Constantino Chiwenga made the comments after Mugabe's vice-president Emmerson Mnangagwa was removed from his post, following a clash with Mugabe's wife Grace. Mnangagwa's removal could pave the way for Grace Mugabe to take over from her husband when he finally steps down.
“The current purging, which is clearly targeting members of the party with a liberation background, must stop forthwith," Chiwenga told a news conference on Monday.
“We must remind those behind the current treacherous shenanigans that when it comes to matters of protecting our revolution, the military will not hesitate to step in."
Mugabe, 93, has been President of 1987. Critics accuse him of rigging elections and he is widely regarded as a de facto dictator.
More to follow