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.
Bus-truck head-on collision in Parana, Brazil kills at least 21
At least 21 people have died and four others injured in a head-on collision between a bus and a truck in the BR-373 highway in Brazil's southern state of Parana, the road operator said on Wednesday in an X post.
At least 9 killed in hotel fire in India's Kolkata
At least nine people have been killed, including a child, in a fire at a hotel in India's eastern city of Kolkata on Wednesday, local police said.
Russian drone attacks kill five in Ukraine's Kherson, governor says
A Russian drone strike on a minibus in Ukraine's southern city of Kherson has killed four people on Wednesday, Ukrainian authorities said, in what President Volodymyr Zelenskyy described as a "vicious" attack.
Ebola cases in Congo exceed 5,000, government data shows
The number of confirmed Ebola cases in the Democratic Republic of Congo now exceeds 5,000, government data has showed late on Tuesday, as health officials warn that response efforts are failing to contain the deadly disease.
8 Israeli airstrikes hit Syria's Abu al-Duhur airbase, state TV reports
Eight Israeli airstrikes have hit the Abu al-Duhur military airbase in northwestern Syria early on Tuesday, targeting the runway and storage facilities, Syria's state-run Ekhbariya said, citing a military source.
