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.
Israel launches airstrikes on south Lebanon
The Israeli military carried out heavy airstrikes on south Lebanon on Thursday after issuing evacuation orders for three locations, saying Lebanese armed group Hezbollah was trying to rebuild its military capabilities there.
Voting ends in first phase of election in India's Bihar
The first phase of the assembly elections in the Indian state of Bihar has concluded, covering 121 constituencies across 18 districts.
Britain's Prince William calls for optimism on environment at EarthShot Prize event
Britain's Prince William expressed optimism on Wednesday about tackling global environmental challenges at a star-studded event in Rio de Janeiro for the fifth edition of his EarthShot Prize.
Afghanistan and Pakistan return to Istanbul for more peace talks
Afghanistan and Pakistan will resume peace talks in Istanbul on Thursday, both nations said, after a previous round ended without agreeing a lasting truce.
Groping of Mexico's president puts violence against women in spotlight
Mexican President Claudia Sheinbaum said on Wednesday she filed a complaint against a man who groped her as she walked between meetings in the capital city, a day after a video of the incident went viral.
The legendary Craig David joins The Kris Fade Show for an unforgettable chat!
The Rock and Chris Evans: A Christmas Surprise!
One of the most talked about comedians in the world takes over The Kris Fade Show. Watch the full interview here...
From taking us down memory lane to a possible BAD BOYS 5 in Dubai?
