KOCHI : The BJP-led National Democratic Alliance (NDA) on Monday announced a siege to the Kerala secretariat on October 30 seeking the resignation of Chief Minister Pinarayi Vijayan alleging corruption and lack of governance in the state. BJP state president K Surendran, who is also the state chairman of NDA told the media that the front will also hold protests across the state in coming days against the alleged corruption. Surendran alleged that the state has become a hub of corruption.