you lori janlori jane gliha hase story. >> reporter: olympic star oscar pistorius, off camera, from thestand he offered an emotional apology. >> there hasn't been a moment since this tragedy happened that i haven't thought about your family. i wake up every morning, you're the first people i think of, the first people i pray for. i can't imagine the pain and the sorrow and the emptiness that i've caused you and your family. i was simply trying to protect reeva. >> reporter: with a hesitant voice pistorius paused, in his statement, he quietly mutt erd what happened the night he pulled the trigger and killed his law student girlfriend, somebody he thought was an intruder. >> i can promise the night she went to bed, she felt love. i've tried to put my words on paper many, many times but no words would ever suffice. >> the paralympic gold medalist known as blade runner reveals he takes antidepressants and sedatives and is often to scared to sleep. >> i have terrible thoughts about what happened that night, i wake up and i smell -- smell blood and i wake up to being terrified. >> reporter: i