Information permanent secretary Nick Mangwana says some 30 gold miners are trapped at a Bindura mine shaft amid fears around their safety.
Said Mangwana in a tweet, "Mash Central. A tragedy has occurred at Ran Mine in Bindura town late this afternoon.
"Mash Central, A tragedy has occurred at Ran Mine in Bindura town late this afternoon. A deep disused mine trench has caved in trapping several illegal gold miners. Exact number not yet established. So far 6 miners have been rescued. Details to follow but numbers could be circa 30."
The incident comes after six miners died earlier this month after they were trapped in a shaft at Matshetshe Mine in Esigodini.
Five artisanal miners also died September this year when they were trapped in a Chegutu mine shaft.
In both incidents, government came under fire for failure to rescue the trapped miners.