Four terrorists and two soldiers were killed in terror attack at air force base in Pathankot of Punjab territory of India.A group of terrorists, believed to be 4-5 in number, attacked the Pathankot Air Force base early Saturday morning. According to initial reports, the incident is being linked to the missing car of a Punjab SP on Friday morning.Meanwhile, authorities said the helicopters and other equipment in the Air base was safe. The entire area has been cordoned off, police said. The attackers had also made calls to Pakistan, police said.The attack comes days after PM Narendra Modi’s unscheduled visit to Pakistan.It is the second big terror attack in Punjab within less than a year as last year three militants stormed a police station in Diana Nagar before being eliminated after 12 hour gun battle.