Kolkata, Dec. 17 -- West Bengal sports minister Aroop Biswas resigned on Tuesday as the government issued a show cause notice to state director general of police Rajeev Kumar and took disciplinary action against a number of other officers for the December 13 rampage at Kolkata's Salt Lake stadium by a section of spectators who bought tickets to see Argentine football star Lionnel Messi but flared up when he left in a hurry because of mismanagement, officials said. "Chief minister Mamata Banerjee accepted Biswas's handwritten resignation letter. She will look after the sports department until the inquiries ordered into the incident are over," a member of the state cabinet told HT requesting anonymity. While the DGP, Bidhannagar police commissioner Mukesh Kumar and principal secretary of state sports department Rajesh Kumar Sinha were served show cause notices and directed to reply in 24 hours, Bidhannagar deputy commissioner of police Anish Sarkar was suspended and made to face an inquiry. Debkumar Nandan, the CEO of Salt Lake stadium, was also removed. The action against the DGP, which was described as unprecedented by several bureaucrats, surprised many. Rajeev Kumar, a 1989-batch IPS officer from the Uttar Pradesh cadre, earlier served as the commissioner of Kolkata police....