They include TDP mandal president M. Balaiah, district executive committee member M. Mahesh and V. Balaiah. The Communist Party of India-Maoist sent a letter to locals saying the kidnapping were in protest against bauxite mining in the agency area. The Maoists oppose mining in the region. The Maoist outfit has called for a week-long shutdown in Andhra-Odisha border area from October 7.