Oscar Pistorius, arriving at Pretoria's High Court, as his defense team prepares to wrap up their closing arguments.<br /> <br />Once a national sports icon, the double amputee is on trial for murdering his model girlfriend, Reeva Steenkamp, at his Pretoria home on Valentine's Day last year.<br /> <br />The prosecution has portrayed Pistorius as a gun-obsessed hothead.<br /> <br />They say he deliberately shot Steenkamp four times through a locked bathroom door, where she was taking refuge during a heated argument.<br /> <br />The defense says the shooting was an accident; that Pistorius thought there was an intruder in the house.<br /> <br />He was acting on "primal instincts", said lead defense attorney Barry Roux during closing arguments.<br /> <br />(SOUNDBITE) (English) DEFENSE ATTORNEY, BARRY ROUX, SAYING (SOUNDBITE CONTINUES OVER SHOT OF REEVA STEENKAMP'S FAMILY LISTENING):<br /> <br />"He stands now with his finger ready to fire if necessary and he stands there and then..." (SLAMS HAND ON TABLE)<br /> <br />There is no jury
