New Delhi, March 18 -- The Election Commission of India (ECI) on Monday transferred West Bengal's senior-most police officer, the home secretaries of six states, and the head of the Mumbai corporation as part of its effort to ensure free and fair polls.

Among those transferred are Rajiv Kumar, the DGP of West Bengal - the second ECI-driven transfer since 2016 for the officer - and Brihanmumbai Municipal Corporation commissioner Iqbal Chahal. ECI also removed the home secretaries of Gujarat, Uttar Pradesh, Bihar, Jharkhand, Himachal Pradesh and Uttarakhand and the secretaries of the general administrative department in Mizoram and Himachal Pradesh.

ECI officials said the transferred IAS officers in these seven states were holding dual ch...