A tribal group in Manipur today reimposed an indefinite blockade on two national highways, demanding adequate supplies of essential commodities to Kuki-Zo communities in hill areas of the state. NH 2 connects Imphal with Dimapur in Nagaland and NH 37 links Imphal with Assam's Silchar. Both highways are vital to Manipur to maintain surface communication with the rest of the country via Nagaland and Assam.