"Such racial discrimination has been happening all these years in a number of places and this particular racial behaviour is not an instance in isolation.
"All legal options available according to Scheduled Tribe Prevention of Atrocities Act 1989 and Fundamental Rights, with its relevant Articles should be taken advantage of, so such behaviour is not repeated in future," the Chief Minister said in a statement here.
"This incident of racial behaviour of the people who do not understand the very spirit of the inclusiveness of this nation is unacceptable, distasteful and racial discrimination that needs to be condemned by one and all and calls for all necessary action as per the law of the land," he said.
The woman, Tailin Lyngdoh, was asked to leave the room because the club's staffers believed her traditional outfit looked like a "maid's uniform", her employer, Nivedita Barthakur Sondhi, told PTI.
Union Minister of State for Home Affairs Kiren Rijiju described the incident as a "clear case of racial discrimination" and asked Delhi Police Commissioner Amulya Patnaik to take appropriate action.
Rijiju raised the matter with Patnaik after Sangma discussed the issue with the him.