"After getting an information, we laid traps at seven places around Guwahati. Post midnight, we spotted a vehicle and searched it. We recovered the arms from there and arrested three persons," Inspector General of Police (Central Western Range) L R Bishnoi said.
Three AK-81 rifles, nine magazines and three US-made bottle grenades were recovered from the vehicle, he said.
The arms were being taken to Goalpara district near the border with Meghalaya, Bishnoi said.