The number of arrest of National Democratic Front of Bodoland, NDFB, militant has gone up to six in Udalguri district so far in connection with possessing illegal arms. State Law and Order IGP L R Bishnoi said that security forces have today seized illegal arms from the house of a former Bodo Liberation Tigers, BLT member. Further investigation is on.Security forces also seized two AK 47 rifles along with magazines this evening under Sidli police station in Chirang district. One person was arrested for allegedly supply arms to NDFB militants.