A joint team of police and the CRPF surrounded a house where Dutta was hiding with other militants. The militants opened fire on the security personnel who retaliated killing Dutta. Other two managed to escape. The police had announced a reward of Rupees three lakh for his arrest. The militant had the charges of kidnapping and killing of a Non Government Organisation activist Sanjoy Ghosh.
Ghosh was kidnapped by ULFA in July 1997 from Bongaon area of Majuli and was subsequently killed though his body was never recovered.
Dutta was based in Majuli and was involved in extortion and recruitment for the outfit.