He had gone to his native place with his family to take part in a family function.
While returning from the function, at least two unidentified assistants on bike fired several rounds on him and killed him and his wife was seriously wounded.
Later, NIA officer was taken to a Hospital in Moradabad where he was declared brought dead.
Tanzeel Ahmed was associated with several important investigations related to terrorist activities.
Beside Pathankot inquiry, he was also associated with Bijnore Blast case in September 2014, and Bardhman incident inquiry.