Lebanese citizen Ziad Jarrah, while transiting Dubai on his way from Karachi, Pakistan back to Hamburg, Germany, draws questioning from UAE authorities about an overlay of the Qu’ran that appeared on one page of his passport. It is a sign of travel to Afghanistan and possible involvement in radical Islamic groups. The officials also noticed the religious tapes and books Jarrah had in his possession. The send him to secondary inspection but release him after he argues that he had lived in Hamburg for a number of years and was studying aircraft construction there.