Police say a second explosion in India's restive northeast has wounded four people.
Senior police official G.M. Srivastava said the blast in Dhekiajuli town came hours after an explosion in Gauhati, the capital of Assam, killed seven and injured 56 people.
Srivastava said the separatist United Liberation Front of Asom is suspected in both attacks.
He said the second blast occurred at a market in Dhekiajuli, 130 miles north of Gauhati.
The attacks came a day before the 30th anniversary of the founding of the militant group, which has been linked to many acts of terrorism in Assam and usually stages attacks around its anniversary.