Soldiers are reported to have taken over the headquarters of Zimbabwe̵
Explosions have additionally been reported within the capital, Harare, however the trigger is unclear.
Earlier, the nation’s ambassador in South Africa denied speak of a coup.
It comes as Zimbabwe’s ruling occasion accused the nation’s military chief of “treasonable conduct” after he warned of a doable army intervention.
General Constantino Chiwenga had challenged President Robert Mugabe after he sacked the vice-president.
Gen Chiwenga mentioned the military was ready to behave to finish purges inside Mr Mugabe’s Zanu-PF occasion.
Tensions have been raised additional on Tuesday when armoured autos have been seen taking over positions on roads exterior Harare, though their function was unclear.
Some employees at ZBC have been manhandled when troopers took over their workplaces in Harare, sources instructed Reuters.
Workers have been instructed that they “should not worry”, a supply added, and that troopers have been solely there to guard the location.
Soon afterwards, witnesses reported three loud explosions within the metropolis centre, though the precise location is unclear.
The US State Department mentioned it was “closely monitoring” the scenario in Zimbabwe and urged all events to resolve disputes “calmly and peacefully”.
The US embassy in Harare tweeted that it could be closed on Wednesday “due to ongoing uncertainty”.
There has been no phrase so removed from 93-year-old President Mugabe or his representatives.
The Zimbabwean ambassador to South Africa, Isaac Moyo, had instructed Reuters that the federal government was “intact” and dismissed any speak of a doable coup as “just social media claims”.
Mr Mugabe sacked Vice-President Emmerson Mnangagwa final week, amid a row over succession.
Mr Mnangagwa had beforehand been seen as an inheritor to the president, however First Lady Grace Mugabe is now the clear front-runner.
The Zanu-PF occasion mentioned Gen Chiwenga’s feedback have been “calculated to disturb national peace… [and] incite insurrection”.
The occasion mentioned it could by no means succumb to army threats, and that it “reaffirms the primacy of politics over the gun”.
The chief of Zanu-PF’s youth wing, Kudzai Chipanga, mentioned the overall didn’t have the complete help of the whole army.
“It is our country and future at stake and we will not let any individual military man interfere with the leader of the party and legitimately voted president of this country,” he instructed reporters on Tuesday.
The youth wing is a robust supporter of Grace Mugabe.
Gen Chiwenga’s warning of doable army intervention got here on Monday at a information convention at military headquarters the place he was surrounded by senior military officers.
He mentioned the “purging” inside Zanu-PF was “clearly targeting members of the party with a liberation background”, referring to the nation’s battle for independence.
“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,” he mentioned.
Mr Mnangagwa is one such veteran of the 1970s warfare which led to independence.