The Delhi police had arrested him in July after he was deported for the second time from Turkey, where he stayed and attempted to join the Islamic State in Syria. He had travelled to Turkey second time using a fake passport which he reportedly obtained from Chennai. However, his second attempt to enter Turkey was also foiled by the police and he was later deported to India. Shajahan, a native of Kannur, has disclosed to intelligence agencies about the presence of 17 persons from Kerala in IS in Syria and Iraq since January 2016.