Before arriving in Delhi today, the 67-year-old visited the famous Kamakhya temple in Guwahati.
The letter accused him of "hurting the decorum and prestige of the Raj Bhavan" and also "insulting, humiliating and psychologically torturing officers and staff." A Deputy Secretary, they alleged, felt so humiliated that he suffered a brain stroke and died within a few days, the employees claim.
Mr Shanmuganathan was appointed Governor of Meghalaya in 2015. Protests by civil society groups erupted on the streets of Shillong yesterday as Republic Day was being celebrated. The protesters said Mr Shanmuganathan should quit and face criminal action. Since he is no longer a governor, he could face charges but officials in Meghalaya say it is the union home ministry's call.