These groups are active in Assam, Manipur and Tripura.

As part of the boycott call Aug 15, the militant groups have called for a general strike from 1 a.m. to 6.30 p.m.

Militant groups in the northeast have for years boycotted national events to protest New Delhi's rule over the region.

Meanwhile, security forces have been put on maximum alert across the region to thwart possible rebel strikes.

'We have deployed security forces in strength across the state,' police officer Debojit Deuri said. Similar security arrangements were made in other states of the region.