A Zimbabwean High Court judge has ruled that the military action leading to Robert Mugabe's resignation was legal.

High Court Judge George Chiweshe  on Friay ruled that the military's actions "in intervening to stop the takeover" of Mugabe's constitutional functions "by those around him are constitutionally and lawful," said Chiweshe.

The military stepped in almost two weeks ago after Mugabe's firing of deputy Emmerson Mnangagwa amid fears that Mugabe's wife was positioning herself to take power.

Zimbabwe's military has sought to show its actions were not a coup.

The judge said the military's actions ensured that non-elected individuals do not exercise executive functions.

Separately, the judge said Mugabe's firing of Mnangagwa as vice president was illegal. Mnangagwa was sworn in as president  on Friday in a whirlwind reversal of fortunes.