Indian authorities say at least 15 people were killed Friday in a series of attacks in the insurgence-ridden northeastern state of Assam.
Police in the state's capital, Guwahati, say seven others were wounded in at least six separate attacks in the eastern districts of Dibrugarh and Tinsukia.
No rebel group has claimed responsibility, but authorities blame the outlawed United Liberation Front of Asom.
The front is one of several militant groups that has been fighting for the state's separation from India since 1979. Separatists believe New Delhi's policies exploit the region's resources and bring little benefit to local residents.
The rebels have intensified their attacks since a truce and peace talks with the government fell apart in late September.