South Africa's president is facing calls to order an inquiry into a police operation that was meant to combat illegal mining but ended up leaving 87 miners to die underground as authorities attempted to force them to surrender during a monthslong standoff.

More than 70 people have reportedly died while trapped in a mine after a monthlong standoff with the South African government over illegal mining. CBS News' Chris Livesay has more.

No more illegal miners are believed to be trapped underground at a gold mine in South Africa, volunteers working with rescue teams have said.

South African authorities have come under intense scrutiny for their response after civic groups said hundreds of miners have been trapped deep in an abandoned gold mine for months.