Monday was the first day of the defense phase of the trial , following three weeks of prosecution in March . Oscar Pistorius starts with apology , saying he can not imagine the pain he caused . Score: 6 Pistorius defense teams will call 14 to 17 witnesses , lawyer Barry Roux says . Pistorius says he thought Steenkamp was an intruder and shot in self-defense .
Oscar Pistorius starts with apology , saying he can not imagine the pain he caused . Score: 6 Pistorius defense teams will call 14 to 17 witnesses , lawyer Barry Roux says . Pistorius says he thought Steenkamp was an intruder and shot in self-defense .