PRETORIA, South Africa (AP) -- An emotional Oscar Pistorius began testifying in his murder trial with an apology to the family of Reeva Steenkamp, the girlfriend he killed last year in his home.
Pistorius took the stand in a South African court Monday and said: "There hasn't been a moment since this tragedy happened that I haven't thought about your family."
The double-amputee athlete said he wanted to protect Steenkamp. He has said he killed her by mistake; prosecutors say he killed her after an argument.
Pistorius also said he is taking anti-depressant medicine and that he has sometimes woken up in terror, suffering from panic attacks.