South African athlete Oscar Pistorius has been denied leave to appeal against his conviction for murdering his girlfriend Reeva Steenkamp.

The Constitutional Court has made the ruling, meaning Pistorius will now be sentenced in April.

Pistorius killed Ms Reeva Steenkamp in February 2013 after firing four times through a locked toilet door.

A manslaughter verdict was overturned in December and a murder verdict introduced in its place.

The highest court in the country ruled that Pistorius had no reasonable grounds of success on his appeal. Pistorius now faces a possible minimum 15-year jail sentence for the murder of his girlfriend.