In a communication to the PMO, Twitter has said it has "removed the reported profile(s) from circulation due to violation of our Terms of Service regarding impersonation".
This communication has been sent in response to a complaint made two months back by the PMO which had identified the six Twitter accounts and wanted these to be shut as these allegedly had communally-sensitive content and other such objectionable material.
"We had requested Twitter to take appropriate action against 6 persons impersonating the Prime Minister
