A passenger on a Turkish Airlines flight from Turkey to Dusseldorf on June 1 allegedly invoked Sharia Law to avoid sitting next to a woman, before slapping an air stewardess who confronted him. German police were called to the aircraft after it landed at Dusseldorf Airport, and the city's federal police are investigating the incident. The suspect, a 29-year-old German national with a Turkish background, has reportedly confessed to the actions, according to German newspaper Bild. Sharia Law is described as the foundational system of religious and moral law in Islam. The incident comes amid reports of other disturbances on flights, including a Delta plane diversion due to an unruly passenger who allegedly slapped a flight attendant over a dispute about drink service. In that separate May 9 incident on a flight from Fort Lauderdale to Los Angeles, a passenger named Cody James Maluck was arrested after allegedly slapping a flight attendant. Maluck reportedly denied slapping the attendant with force but admitted to touching her. He was federally charged with interfering with flight crew members and staff by assaulting and intimidating them, a charge that carries a potential sentence of up to 20 years in prison or a $25,000 fine.