Watch: Conflicting accounts in Pistorius case

There are conflicting accounts of what happened in the home of Paralympic sprinter Oscar Pistorius in the early hours of Valentine's Day. The star athlete, charged with the murder of his model law graduate girlfriend, says he shot 29-year-old Reeva Steenkamp repeatedly through a locked bathroom door at night by accident, having mistaken her for a burglar. Prosecutors accuse Pistorius of premeditated murder.