National Investigation Agency officials said that Salvinder Singh, his jeweller friend Rajesh Verma and cook Madan Gopal have been summoned for a routine questioning as the agency is preparing to receive a five-member Special Investigation Team from Pakistan on March 27.
The National Investigation Agency handed over some more documents, including DNA reports and call details of the four terrorists killed in the attack, to the JIT.
The National Investigation Agency on Monday filed a chargesheet in the Pathankot airbase terror attack, naming Pakistan-based Jaish-e-Mohammed chief Masood Azhar and three others of his organisation as accused.
The visiting Pakistani JIT will begin recording the statements of the witnesses in the Pathankot terror attack case from Thursday.
