In Chhattisgarh, naxalites blew up a portion of the railway track near the Kamalur station in the Dantewada district last night. Rail communication along the K.K. route connecting Vailadila in Chhattisgarh with Vishakhapatnam in Andhra Pradesh has been affected. Police sources said, the naxalites removed the portion of the rail track after blasting it.