Itanagar, August 10: Efforts by the NSCN (IM) to broker their demand for sovereignty were not possible through negotiations with the Centre, Arunachal Pradesh Governor SK Singh said on Wednesday.

Despite knowing this, the NSCN (IM) leaders were still demanding sovereignty in the negotiations, Singh, a former foreign secretary, said.

Addressing the inaugural session of a four-day workshop on women's leadership in Itanagar, the Governor said that the problems of States like Arunachal Pradesh in the Northeast remained unsolved because they remained socially isolated from the mainstream.