Oscar Pistorius didn't consciously pull the trigger the night he shot and killed his girlfriend, the Olympic sprinter testified during his murder trial Tuesday.
Pistorius said he was "overcome with a sense of terror and vulnerability" before he shot through a closed bathroom door, fearing an intruder was inside.
Defense attorney Barry Roux asked his client what he meant when he referred to the shooting as an "accident."
"I mean the situation, and the situation as a whole, it wasn't meant to be," Pistorius said.
The double amputee said he was terrified when he heard the sound of the toilet door opening.
"I didn't think about pulling the trigger. As soon as I heard the noise, before I could think, I pulled the trigger," he said.
The testimony came after the prosecution ended its cross-examination Tuesday.
Pistorius cried and his voice trembled as prosecutor Gerrie Nel challenged his account of what happened the night he shot and killed his girlfriend, Reeva Steenkamp.
Nel asked who should be blamed for shooting his girlfriend on Valentine's Day 2013.
"I'm not sure, my lady," Pistorius said, directing his answer to the judge. He repeatedly said he feared for his life and thought there was an intruder in his bathroom.
A day earlier, Pistorius testified, "I blame myself for taking Reeva's life."
He became emotional as he described finding his girlfriend slumped over by a toilet after shooting her through a closed bathroom door.
"I was saying, 'Baby hold on. Jesus, please help me,' " he said Tuesday.