New Delhi, June 17 (ANI): Amid reports that NDA government wants to replace governors appointed by its predecessor, Uttar Pradesh governor BL Joshi tendered his resignation on Tuesday. He has sent his resignation papers to the Home Ministry. Joshi's tenure was to end next month. His resignation could be the start of more such exits of the state governors after the new BJP government took over last month. Home Ministry sources say other UPA-appointed governors who still have two years or more to complete their term are likely to come under pressure as the government has asked President Pranab Mukherjee to ask for their resignations soon. BJP leader Subramanian Swamy had said today that the governors should resign themselves as they were appointed by Sonia Gandhi and not on merit.