South African President Cyril Ramaphosa is facing calls to order a national 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.

The death toll in a monthslong standoff between police and miners trapped while working illegally underground at an abandoned gold mine in South Africa has risen to at least 87, police said on Thursday as they wound down a rescue operation that has pulled more than 240 survivors out from deep underground.

The prospectors were trapped underground for months as police, on orders from South Africa’s government, attempted to starve them out.