In which state is the Majuli river island located?

Majuli is a large river island in the Brahmaputra River, Assam, India. On September 2 it was declared the largest river island in the world, toppling Marajo in Brazil, by Guinness World Records. The river island covers an area of around 880 sq.km. The island lost around one-third of its area due to frequent flooding of the river. It was recently declared a district & was earlier a sub-division under Jorhat district.