Several hundred people are believed to remain in an illegal mine in South Africa after the government cut off vital supplies and refused to help them, in a dramatic bid to crack down on the industry.

South Africa's government says it won't help a group of illegal miners inside a closed mine in the country's North West province who have been denied access to basic supplies as part of an official strategy against illegal mining.

Illegal miners are called "zama zama" ("take a chance" in Zulu) and operate in abandoned mines in the mineral-rich country. Illegal mining costs the South African government hundreds of millions of dollars in lost sales each year. Many South African mines have closed down in recent years and workers have been sacked.