Gallery: Oscar Pistorius trial Day 9

Olympic and Paralympic track star Oscar Pistorius reacts in the dock during his trial for the murder of his girlfriend Reeva Steenkamp, at the North Gauteng High Court in Pretoria. REUTERS/Themba Hadebe/Pool

Olympic and Paralympic track star Oscar Pistorius reacts in the dock during his trial for the murder of his girlfriend Reeva Steenkamp, at the North Gauteng High Court in Pretoria. REUTERS/Themba Hadebe/Pool

Oscar Pistorius takes notes as he sits in the dock, listening to evidence at court in Pretoria, charged with the shooting death of his girlfriend Reeva Steenkamp in 2013. (AP Photo/Themba Hadebe, Pool)

A policeman demonstrates the effect of hitting of a bathroom door with a cricket bat during the trial of South African Paralympic athlete Oscar Pistorius in the North Gauteng High Court in Pretoria. REUTERS/Alexander Joe/Pool

State prosecutor Gerrie Nel (R) speaks as forensic investigator Johannes Vermeulen (L) watches during the Oscar Pistorius trial at the high court in Pretoria. REUTERS/Themba Hadebe/Pool

Olympic and Paralympic track star Oscar Pistorius sits in the dock during his trial for the murder of his girlfriend Reeva Steenkamp, at the North Gauteng High Court in Pretoria. REUTERS/Themba Hadebe/Pool

Olympic and Paralympic track star Oscar Pistorius sits in the dock during court proceedings at the North Gauteng High Court in Pretoria. Pistorius is on trial for murdering his girlfriend Reeva Steenkamp at his home on Valentine's Day last year. REUTERS/Alet Pretorius/Media24/Pool

Forensic investigator Johannes Vermeulen (L) speaks while holding a cricket bat as State prosecutor Gerrie Nel (R) cross examines him during the Oscar Pistorius trial at the high court in Pretoria. REUTERS/Themba Hadebe/Pool

Lois Pistorius (L), the aunt of Oscar Pistorius, sits with an unidentified family member during the trial of Oscar Pistorius at the high court in Pretoria. REUTERS/Themba Hadebe/Pool

Oscar Pistorius takes notes during court proceedings at the North Gauteng High Court in Pretoria. Picture: Themba Hadebe

Olympic and Paralympic track star Oscar Pistorius takes notes during court proceedings at the North Gauteng High Court in Pretoria. REUTERS/Themba Hadebe/Pool

Oscar Pistorius puts his hands to his head as he listens to forensic evidence during his trial in court in Pretoria. Pistorius is charged with the shooting death of his girlfriend Reeva Steenkamp on Valentines Day in 2013. (AP Photo/Alet Pretorius, Pool)

Oscar Pistorius covers his head with his hands and a notebook as he listens to forensic evidence during his trial. Pistorius is charged with the shooting death of his girlfriend Reeva Steenkamp on Valentines Day in 2013. (AP Photo/Alet Pretorius, Pool)