"According to him, Prof. James Matisoff, has excluded Meitei language from the Tibeto-Burman group. He is firmly of the opinion that the North-East people of India who speaks various branches of Tibeto-Burman main group migrated from far east. The exception is the Khasis and the Meiteis. According to him, the Meitei language was self-generated and self-organized in the long evolutionary process and the Meitei alphabet is the only of its kind in the world."
January 1, 1970
https://en.wikiquote.org/wiki/Meitei_language