A gunfight started on Wednesday between security forces and holed-up militants in Jammu and Kashmir's Shopian district, police said.Following specific information about presence of militants in Baderhama village of Zawoora area in Shopian, security forces launched a cordon and search operation, a police officer said."As the cordon around the hiding militants was tightened, they fired at the security forces triggering a gunfight which is going on," the police officer said.