NEW DELHI: Chaos broke out when a 24-year-old man arrested in an arms smuggling case stripped and began singing and dancing obscenely inside a police lockup in south Kolkata, police said Wednesday.The incident took place at the Ekbalpore police station, where the accused, Mohammad Shahbaz, was being held after his arrest on Monday.“His actions last night have prompted us to file a complaint, with an investigation now underway to understand the motives behind this unprecedented behaviour,” an officer told PTI.According to police, Shahbaz suddenly disrobed and began performing vulgar songs and dances inside the lockup, apparently to draw attention.“The situation took a strange turn when he suddenly disrobed and started singing and dancing in a vulgar way, apparently aimed at drawing attention,” the officer said.When policemen tried to restrain him, Shahbaz — known locally as ‘Pagla Shahbaz’ — allegedly threatened them.“Female officers were also present during the incident. It took considerable time for the personnel to control the situation,” the officer added.Police have filed a formal complaint against Shahbaz, and an internal inquiry has been initiated into the incident.