After the passage in Sikkim Assembly on 29 December, 2010, the bill was sent on the same day to the state governor who, in turn, forwarded it for presidential nod on 13 January, 2011.
The bill got the signature of the then President Pratibha Patil on 16 July, 2012, nearly 20 months after it was passed in the state house.
The delay in getting the president's signature could be the effort of the Central government to formulate and pass the Lokpal Bill, the sources said.