A cave-in has prevented rescue workers reaching 33 miners trapped underground at the San Jose mine in northern Chile.

On 5 August a tunnel collapsed at the mine owned by San Esteban, trapping the miners who were working at a depth of around 450m.

Three teams were attempting to reach the miners using a ventilation shaft when it was blocked by the cave-in.

An attempt has been made to drill holes to provide the miners with food, water and oxygen.

Peru’s Mining Minister Laurence Golborne said it could take at least a week to reach the miners, reports BBC News.