"As far as India in concerned, we don't believe that China has any locus standi in this matter (irrigation project)," Tharoor told mediapersons while responding to queries on Beijing's opposition to the project.
China had tried to block an ADB loan for the project, claiming that the state was disputed.
The minister said that Arunachal Pradesh was an integral part of India and the country was committed to the welfare and development of the state.
"Arunachal Pradesh will not be neglected by this government," Tharoor said. The comments assumes significance as these came on the eve of talks between Special Representatives -- National Security Advisor M K Narayanan and Chinese State Councilor Dai Bingguo in New Delhi to discuss the boundary issue.