Guardian Unlimited | Special reports | Father insists alleged leader of attack on WTC is still alive: "'As I saw the picture of my son,' he said, 'I knew that he hadn't done it. My son called me the day after the attacks on September 12 at around midday. We spoke for two minutes about this and that. 'He didn't tell me where he was calling from. At that time neither of us knew anything about the attacks.' Mr Atta said he did not condone the attacks, but could understand the hijackers' motivation. 'Every day our Palestinian brothers are being murdered, their houses destroyed. If their relatives were to fly a plane into the Empire State Building I couldn't hold it against them,' he added."