"The overall situation is fast improving and it is returning to normalcy. People are going back to their homes," Gogoi told a press conference here.
Gogoi said three persons are still missing since the attack took place on December 23.
"As of total dead is 81 and three persons are still missing. Security persons are continuing their operations to nab the culprits," Gogoi said.
Out of the 81 dead, 66 are Adivasis, 13 Bodos and 2 are Bengalis, Assam State Disaster Management Authority said.
A total of 102 police cases have been filed in different places and 64 persons have been arrested.
Out of these cases, the state government has handed over four cases to NIA.