Mohammad Abu Sakha was never charged, yet he was held for 20 months
Passengers claimed the clown was drunk and they didn't want to give him money for his jokes
People dressed as clowns have been spotted in Austria, with some actually attacking others leaving them injured
The incident in Berlin is the latest in a wave of copycat pranks
An American student in Cambodia died after taking part in the 'killer clown craze'
Authorities are appealing for witnesses after the incident, which took place in Potsdam
Students in Montreal have developed a mobile phone app which helps to track clown encounters
The dark trend recently came to the UK from the United States
One individual is particularly keen to end the 'killer clown' trend
Man was arrested on Uxbridge Road in Hillingdon, the latest in a series of clown-related incidents
talkRADIO speaks to the people who hunt down the people who dress up as creepy clowns in one of the darkest viral trends
Professor Mark Griffiths says people have been sparked into action by
Meanwhile a girl collapsed and was left vomiting on the floor after a clown approached her house in Ciudad Juarez.
An Ohio school district was closed today after a man reportedly made a threat dressed as a clown, and has previously assaulted a woman in Reading
Tennessee police have issued a warning that clowns may be attempting to lure children into the woods
Officers in the city of LaFrange claim several people have reported clowns roaming around trying to talk to children