Soldiers and an armored vehicle patrol on a street in Harare, capital of Zimbabwe, Nov. 15, 2017. (Xinhua/Philimon Bulawayo)
Moyo urged the people to minimize movement but said those going to work and with essential businesses should carry on.
He urged other security sectors to cooperate with the military.
"Let it be clear that we intend to address the human security threat in our country and any provocation shall be met with an appropriate response," he warned.
State television was playing liberation war songs all early morning, indicating that the military was in charge of the Zimbabwe Broadcasting Corporation.
Government-controlled newspaper The Herald, which on Tuesday did not run Chiwenga's statement, was said to be preparing a special edition to be published later on Wednesday.
Moyo said an impending purge of civil servants by some top members of government would be stopped and the judiciary allowed to exercise its role without undue interference.
