SRINAGAR, India (Reuters) - Indian security forces killed the chief of the largest militant group in Kashmir in a gun battle on Sunday, as the disputed region is riven by violence more than a year after New Delhi withdrew its semi-autonomy. The killing takes the number of militants killed in the Muslim-majority region so far this year by Indian troops to 190, police official Vijay Kumar told Reuters. Saiful Islam Mir, commonly known as Saifullah, chief of the Hizbul Mujahideen militant group, was shot dead in Kashmir’s main city of Srinagar, Kumar said.