The men are believed to have drowned after water from a burst dam flooded the shafts and underground tunnels they were working in.
Police said rescue teams were trying to pump out the water and search for bodies and any survivors.
According to reports, illegal miners in Battlefields, 175 km west of Harare, had entered shafts on land owned by RioZim and another firm in search of gold.
It added that the two mines, called Silver Moon Mine and Cricket Mine, are run by registered companies.
Pakistan bombs targets in Afghan cities, minister calls it 'open war'
Pakistan has bombed Taliban government targets in Afghanistan's major cities overnight, officials from both countries said on Friday, with Pakistan's defence minister describing the conflict as "open war".
Indian court throws out alleged corruption case against opposition leader
An Indian court on Friday declined to proceed with a trial against opposition leader and former Delhi Chief Minister Arvind Kejriwal in an alleged corruption case that his party has labelled as politically motivated.
Bill Clinton to give private testimony to Congress about Epstein
Former President Bill Clinton is due to testify on Friday behind closed doors to a congressional panel about his ties to the late convicted financier Jeffrey Epstein.
Hillary Clinton tells panel she has no information on Epstein
Former US Secretary of State Hillary Clinton has told a congressional committee on Thursday that she did not remember ever meeting the late convicted financier Jeffrey Epstein and had no information to share about his criminal activities.
US, Ukraine discuss post-war reconstruction as Russia pummels grid
Ukrainian and US officials met in Geneva on Thursday for talks on post-war reconstruction despite a deadlock in peace negotiations with Russia, which pounded infrastructure across Ukraine with drone and missile strikes overnight.
6:00pm - 7:00pm
An extra hour of the UAE's biggest radio show for your drive home.
The legendary Craig David joins The Kris Fade Show for an unforgettable chat!
Hear Maz & James chatting to the featured artists every month with Flash Entertainment.
The Rock and Chris Evans: A Christmas Surprise!
It arrived: The UAE's First Mega Music Festival at Expo City Dubai!
