Gunman who opened fire at bus is unknown What motivated the attack remains a mystery DUBAI: An unknown gunman opened fire at a tourist bus near Jordan"s ancient city of Petra, a major tourist attraction, but there were no injuries, according to the Jordanian Ammon News Agency. "A security source told Ammon that the bus, which belongs to Petra local authorities, sustained material damage but there were no injuries," the news agency reported. It is not known what motivated the attack, but the a news agency suggested it was for personal reasons.