Local media reported that heavily armed soldiers had sealed off state TV broadcaster — the Zimbabwe Broadcasting Corporation.
- The Nation's Correspondent in the capital said anxiety had gripped Zimbabwe following an "unusual movement" of troops.
- Witnesses told AFP that several tanks had been spotted on the outskirts if the capital.
Military tanks were on Tuesday spotted heading toward Zimbabwe's capital a day after the military chief warned President Robert Mugabe over purge in the ruling Zanu-PF party.
Witnesses told said military vehicles were also blocking major roads outside Harare.
A Reuters witness saw two other tanks parked beside the main road from Harare to Chinhoyi, about 20 kilometres from the city.
One, which was pointed in the direction of the capital, had come off its tracks.
The troops, believed to be from Inkomo Barracks on the outskirts of Harare, were heavily armed.
Local media reported that soldiers had sealed off state TV broadcaster — the Zimbabwe Broadcasting Corporation.
The Nation's correspondent in the capital said anxiety had gripped Zimbabwe following an "unusual movement" of troops.
Witnesses told AFP that several tanks had been spotted on the outskirts of the capital.
"I saw a long convoy of military vehicles, including tanks, about an hour ago. I don't know where they were heading," a female fruit seller near Westgate shopping centre about 10 kilometres (six miles) from central Harare told AFP.
A second female by-stander at the shopping centre also told the AFP reporter that she had seen the convoy.
Zimbabweans were thrown into panic after a flurry of pictures of the military artillery appeared in social media.
There were no reports of violence but the situation in the capital was tense.
The movements by soldiers occurred hours after Zanu-PF youth leaders told journalists in Harare that they were ready to die for President Mugabe following army commander Constantino Chiwenga's unprecedented warning.