Olympic athlete Oscar Pistorius has been found guilty of murder after a South African appeals court overturned an earlier manslaughter verdict.

He killed his girlfriend Reeva Steenkamp in February 2013 after shooting her four times through a locked toilet door.

He is currently under house arrest after spending one year of his original five-year sentence in jail.

Pistorius will have to return to court to be re-sentenced, for murder.

South Africa’s Supreme Court of Appeal ruled that the lower court did not correctly apply the rule of dolus eventualis – whether Pistorius knew that a death would be a likely result of his actions.

The minimum sentence for murder is 15 years but judges can apply some discretion.