Violence and looting has raged in South Africa for the sixth day running, stoking fears of food and fuel shortages as disruption to farming, manufacturing and oil refining began to bite amid the country’s worst unrest in decades.

More than 70 people have died as grievances over the jailing of former President Jacob Zuma have widened into an outpouring of anger over the inequality that remains 27 years after the end of apartheid.

The deployment of 2,500 soldiers to support the overwhelmed South African police has so far failed to stop the rampant looting.