An FIR in this regard was registered last week after a complaint filed by Director of Vigilance Department in the Ministry of Commerce.
In the complaint, the senior official said an unknown person had sent a letter to Sibal using a letter head which said Sharma was a state foreign minister.
"The imposter has used a letter head mentioning Anand Sharma's designation as Member of Parliament (Rajya Sabha) and State Foreign Minister, Government of India in a letter dated January 21, 2012, which re