A South African farm worker has described to a court how he was forced by his boss to feed the bodies of two black women to pigs in an attempt to hide evidence after they were shot.

Adrian De Wet, 21, said he was told to throw the bodies inside a pig enclosure, explaining that "when pigs are hungry enough, they'll eat anything".

He admitted opening fire on the two women with his boss - farm owner Zachariah Johannes Olivier - before he ordered him to help dispose of their bodies.

Mr Olivier and another man, William Musora, are accused of murder after Maria Makgato, 45, and Lucia Ndlovu, 34, were killed while allegedly looking for food on a farm near Polokwane in South Africa's northern Limpopo province last year.

Farm supervisor Mr De Wet was also previously accused of murder, but charges were dropped by the prosecution when he turned state witness. He had argued he was under duress when he was forced to throw the bodies into the pig enclosure.