A man set his motorcycle on fire following a dispute with a police officer in the Court Hargram area of Rajshahi on Monday.The biker, Ashiq Ali,30, set fire to his motorcycle out of frustration after a traffic sergeant wanted to see his driving license and registration documents to penalize him for a traffic rule violation, according to the police.Witnesses said Ashiq Ali was crossing the area riding with two others around 1:45 pm. The traffic sergeant stopped them at the checkpoint and wanted to see his papers. Also read: RU student killed in road crash: students vandalise and set fire on vehiclesAshiq failed to provide his papers as he left these at his home. However, Ashik wanted to bring his papers but the police approached to file a case.Later, he got disappointed and at one stage set his bike on fire.Moushumi Akhter, Sub-Inspector of Kashiadanga Police Station was on patrol duty in the Court Railway Station area at that time. On information, she visited the spot and said that there were three men on the motorcycle. None of them had helmets and there were no documents of the motorcycle.Anirban Chakma, deputy commissioner of police (Traffic) of the city, said they interrogated the biker and talked to his father. Also read: Locals set fire to truck that killed 2 youths on motorcycle in KushtiaAshiq was mentally upset over the financial issue and he might have done this over mental sickness, added the officer."Legal action will be taken in this regard," he said.