A Pakistani Muslim paddles his bicycle infront of the house of al Qaeda's computer engineer Mohammad Naeem Noor Khan in Karachi. A Pakistani Muslim paddles his bicycle past the house of recently arrested al Qaeda suspect and computer engineer Mohammad Naeem Noor Khan alias Abu Talha in Karachi August 5, 2004. A wave of arrests may indicate some success in Pakistan's crackdown on Islamic militancy but experts say it also shows al Qaeda is drawing on fresh reserves from local militant cells that continue to flourish. REUTERS/Zahid Hussein