NEW DELHI/KOLKATA: ED has issued a lookout circular against Kolkata DCP (Special Branch) Shantanu Sinha Biswas to stop him from leaving the country after he allegedly skipped five summons in a money laundering case. Biswas is a former officerin-charge of Kalighat Police Station, the area in which CM Mamata Banerjee’s house is located. ED had searched Biswas’s home last month. He was not present at the time. The case is linked to an alleged syndicate involved in illegal land deals and extortion and led by Biswajit Podder, an elusive history-sheeter known as Sona Pappu who faces attempted murder charges among his many cases. “The circular has been issued so that he can be detained at any airport, or seaport,” a source said. Biswas allegedly skipped ED summons citing “official commitments”, the source said, adding his lawyer had represented him before. ED had arrested Joy Kamdar, a Kolkata businessman, in the case last month. It had claimed earlier that a Toyota Fortuner and a US-made revolver were seized during a search at Poddar’s home