Pathankot, Mar 29 (ANI): Security has been tightened outside the Pathankot airbase ahead of the Pakistan Joint Investigation Team's visit on Tuesday. The Pakistan JIT left for Pathankot from the Amritsar Airport in bulletproof SUVs today morning. Following inputs from the Ministry of Home Affairs about a possible threat to the Pakistan JIT by the Islamic fundamentalist organisations based in Pakistan and their proxies in India, the Punjab Police has made arrangements to provide 25 bulletproof cars to ferry them and the National Investigation Agency (NIA) officials in Pathankot and areas close to the border.