Johannesburg: A South African appeals court has convicted Oscar Pistorius of murder, overturns manslaughter conviction.

The decision could send disgraced Olympic and Paralympic gold medallist Oscar Pistorius back to jail for at least 15 years for killing his girlfriend on Valentine's Day 2013.

Last year, a judge gave Pistorius a five-year jail sentence for "culpable homicide" of Reeva Steenkamp, but prosecutors say he should be convicted of murder for firing four shots through a locked toilet door.