As the government blocked the six accounts after Twitter took no action, the social networking portal has communicated to the PMO that it would be locating the "unlawful content".
It has told the PMO that it could not take action earlier "because the government entity did not intimate through proper procedure electronically to our system and hence the request was not located," sources said.
Twitter said it was "now actively reviewing" the request and will be seeking additional information from the Ministry of Communication and IT "to locate the unlawful content and the specific unlawful tweet," they said.
"India is important to us and we would like to have clearer communication in these matters in future," the communication said, adding that Twitter should be put in touch with appropriate departments in this regard.
Earlier, the PMO had asked the Cyber Security Cell of the Department of IT to block these accounts as these had content having "communal overtones" and could have serious ramifications as these could be mistaken as the official account of the PMO.
The PMO had initially asked the Twitter to shut down these accounts but after it was not done, the matter was referred to the Cyber Security Cell.