Paralympic star Oscar Pistorius has said he shot his model girlfriend because he thought she was a robber.
The gold-medal winner, known as the Blade Runner, is accused of murdering Reeva Steenkamp at his home in Pretoria, South Africa, on Thursday.
Pistorius's lawyer read out a statement in court which gave his version of the events that led to Steenkamp's death.
The 26-year-old denied murder and said the couple were "deeply in love".
In the statement, the defendant said he felt vulnerable because he was not wearing his prosthetic legs. He claimed he fired his gun into the bathroom, but then realised Steenkamp was not in his bed.
"It filled me with horror and fear," Pistorius said.
Upon realising his mistake, he put on his legs, walked towards the bathroom and broke down the locked door with a cricket bat.
He said he ran downstairs carrying his 29-year-old girlfriend, but "she died in my arms".
Pistorius went on: "I fail to understand how I could be charged with murder, let alone premeditated murder, as I did not plan to murder my girlfriend, Reeva Steenkamp."