JORHAT, Nov 12: More than 100-strong herd of wild elephants which has been terrorizing villagers in upper Assam for the last few years is back at the Nimati-Hatisal and Kokilamukh areas along the Brahmaputra here. Villagers, apprehensive of the herd ravaging the ripe paddy, are keeping a night long vigil along the embankment in North Jorhat to head off the herd.