The prosecution will argue that Oscar Pistorius is guilty of "premeditated murder".
An application for Oscar Pistorius' bail hearing to be postponed is now being heard.
Pistorius has slumped forward, head in hands.
Pistorius will concentrate on defending himself against allegations that he murdered his model girlfriend on Valentine's morning.
The South African press say the weapon is a key piece of police evidence, but Pistorius' family said the death is a 'tragic accident.'
The family and management of Oscar Pistorius have released a statement disputing the murder charge against him 'in the strongest terms'.