Security arrangements have been tightened across Meghalaya, particularly in the capital Shillong, in view of the 24-hour customary bandh called by the banned Hynniewtrep National Liberation Council to boycott the Republic Day celebrations.
The 24-hour bandh has been called from 6 pm on Sunday to 6 pm on Monday.
Additional forces, including paramilitary personnel have been deployed at various places across the city while frisking of vehicles and patrolling have been intensified.
A police spokesman said while there is no specific threat, yet security personnel were kept on maximum alert to thwart possible attacks by insurgents on Republic Day.
BSF personnel guarding the border were also asked to strengthen vigil along the porous patches of the Bangladesh border to prevent militants from sneaking into India from across the border.
Vigil along the inter-state boundary with Assam has also been increased to prevent movement of militants.
The central Republic Day function will be held at the Polo Grounds in Shillong where Governor R S Mooshahary will unfurl the tricolor. Ceremonial parades have been organized at all the district headquarters and subdivisions.