Police said the FIR was filed after Congress MLA Kamalakhya Purkayastha from North Karimganj constituency faxed the complaint to the Dispur police station today.
Purkayastha alleged that Nath, her second husband Jacky Jakir and two of her escorts forcibly entered his (Purkayastha's) official quarter at Dispur capital complex late last night and beat up at least four of his visitors and a caretaker.
Purkayastha, who was not present in the quarter during the incident as he was in his constituency, further charged that Nath attacked his visitors doubting that they were "involved in the attack on Nath and her husband" in a Karimganj hotel last week.
Police sources said investigations are on.
Nath, who represents the Borkhola assembly constituency in Barak Valley, had created a furore by announcing her marriage with Jakir without divorcing her first husband.
Nath and Jakir were beaten up and injured by a mob at Karimganj town on June 29 night.
