At least 44 people are dead in India after several bombs exploded in the northeast states of Nagaland and Assam on Saturday.

Officials say more than 100 people have been injured.

The first bomb went off in a railway station in Dimapur, Nagaland. Police say the platform was crowded at the time, waiting for a train from Assam state to arrive. Another explosion soon ripped through a central market just as shopkeepers were opening up their stores.

People walk by the site of a bomb blast at the railway station in Dimapur, Nagaland. (AP Photo/Nagaland Post)
People walk by the site of a bomb blast at the railway station in Dimapur, Nagaland. (AP Photo/Nagaland Post)

Seven other attacks took place in neighboring Assam state within hours of the Nagaland attacks.

At least 18 people were killed in the Assam attacks. The deadliest occured in a village bordering Bangladesh, where gunmen shot into a crowded marketplace — killing 11 and injuring dozens. The gunmen then killed four more people as they left the market.

Outlawed rebel group to blame, police official

Two simultaneous explosions occurred in Assam's Bongaigaon town. Two people died in the first and a hotel was damaged but no one was hurt in the second.

In the town of Chirang, one man was killed and seven injured in another explosion. Two other explosions took place in Baihata Charali and Abhayapuri towns but no casualties have been reported.

Separatist rebel groups have been fighting for independence in both states.

Inspector-General Khagen Sarma, the top police official of Assam state, indicated the outlawed National Democratic Front of Boroland may be to blame.

Sunday is the 18th anniversary of the group, which is demanding a homeland for Boroland, a region spanning both states.

The Indian government has been in peace talks with Nagaland's main rebel group — the National Socialist Council of Nagaland (NSCN-IM) — since signing a ceasefire agreement in 1997.

More than 15,000 people have died in the Nagaland conflict.

The violence took place as the nation marked the 135th anniversary of the birth of Mahatma Gandhi, who led the country's drive to independence from British colonial rule in 1947.

(with files from Australian Broadcasting Corporation)