LUXOR — An initial probe into a hot air balloon crash that killed up to 19 tourists in Egypt has ruled out any criminal activity as a cause of the accident, state media said Wednesday. “Investigations so far by the general prosecution show no suspicion of criminal activity,” the official MENA news agency reported, citing the preliminary findings of the investigation. Four investigating teams were formed after Prime Minister Hisham Qandil ordered a probe into Tuesday's balloon crash in the ancient temple city of Luxor that killed tourists from Hong Kong, Japan, Britain, France and Hungary. Luxor Governor Saad Ezzat and a delegation of Egyptian officials, as well as tourism industry professionals, visited the scene of the crash where they placed three bouquets of white flowers before observing a minute's silence. Investigators have inspected the area in the dense sugar cane fields of Luxor, spoke to witnesses and residents and reviewed the operating company's paperwork and licenses. According to the investigating teams, the company that operates the balloon rides, Sky Cruise, had passed a routine inspection by the Civil Aviation Ministry on Feb. 13-15. “The minister of aviation checked the documents of the company operating the balloon. He found everything is okay. The technical requirements were okay,” Governor Ezzat told reporters at the crash site. Civil Aviation Minister Wael Al-Maadawi said, meanwhile, that he had agreed to a request by British authorities to attend the probe. – Agencies