 All AR posts were alerted to keep a watch on the movements of MNF members.The security forces stationed in the Mizo Hills district included the 1st Battalion, Assam Rifles (1 AR) headquartered at Aizawl, the 5th Battalion, Border Security Force (5 BSF) and the local police.On the night of 28 February/1 March 1966, the MNF launched a series of simultaneous attacks on the 1 AR garrisons at Aizawl, Lunglei and Champhai and the 5 BSF posts at Chawngte, Demagiri, Hnahlan, Marpara, Tipaimukh, Tuipang, Tuipuibari, Vaphai and Vaseitlang.