New Delhi, Jan 12 (UNI) India is issuing a Black Corner Notice to the Interpol for identification of four bodies of the terrorists, killed in the Pathankot airbase encounter, Home Ministry sources said. Meanwhile, Gurdaspur Superintendent of Police Salwinder Singh was today subjected to intensive questioning by NIA throughout the day. Sources said examination had not been completed and he will be summoned for questioning tomorrow also. SP’s friend Rajesh Verma and cook Madan Gopal are being questioned in Punjab. The cook will be called for questioning in NIA headquarters too. Rajesh will also be summoned in Delhi if medical condition is allowed. Meanwhile, a 10-member NIA team led by DIG continued its search operation in Pathankot airbase area where encounter took place. One AK-47 magazine, a mobile phone and a binocular were recovered from the crime scene. UNI NAZ/SM SW AE 1835