Prosecutor: Pistorius shot lover as they talked

South African Paralympic track star Oscar Pistorius (C) arrives for his trial at the North Gauteng High Court in Pretoria on April 11, 2014. As the defence opens its case, the 27-year-old Paralympian will give the court his first account of why he shot dead his model girlfriend Reeva Steenkamp in the early hours of Valentine's Day in 2013. AFP PHOTO / MUJAHID SAFODIENMUJAHID SAFODIEN/AFP/Getty Images
South African Paralympic track star Oscar Pistorius (C) arrives for his trial at the North Gauteng High Court in Pretoria on April 11, 2014. As the defence opens its case, the 27-year-old Paralympian will give the court his first account of why he shot dead his model girlfriend Reeva Steenkamp in the early hours of Valentine's Day in 2013. AFP PHOTO / MUJAHID SAFODIENMUJAHID SAFODIEN/AFP/Getty Images
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PRETORIA, South Africa (AP) — The prosecutor in the Oscar Pistorius murder trial has told the world-famous athlete that he fatally shot his girlfriend through a toilet door as they were talking.

Chief prosecutor Gerrie Nel insists that Pistorius intentionally killed Reeva Steenkamp and put it Friday during cross-examination of the double-amputee Olympian that ‘‘she was standing behind the toilet door talking to you when you shot her.’’

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Pistorius denied Nel’s claim, saying ‘‘that’s not true’’ in a dramatic exchange to end the first week of the runner’s testimony at his trial.

Nel says the ‘‘only reasonable explanation’’ for the shooting last year is that Pistorius killed the model after a fight. Pistorius claims he shot Steenkamp by mistake thinking she was a nighttime intruder behind a toilet door in his bathroom.