The Delhi Police Special Cell reached Twitter India office in the national capital to serve notice in connection with the "toolkit" probe. Cops searched the micro-blogging platforms' offices in Delhi's Lado Sarai and Haryana's Gurugram.
"The Delhi police team went to Twitter office to serve a notice to Twitter, as a part of routine process. This was necessitated as it was to ascertain who the right person was to serve a notice, as replies by Twitter India MD had been very ambiguous," news agency ANI quoted sources as saying.
Earlier in the day, the special cell sent a notice to Twitter in connection with an inquiry into the complaint regarding the alleged COVID-19 'toolkit' and sought a clarification from the microblogging site for classifying a related tweet by BJP leader Sambit Patra as "manipulative", an official said on Monday.
It appears that Twitter has some information that is not known to the police. This information is relevant to the inquiry, Delhi Police PRO Chinmoy Biswal said.
The BJP has accused the Congress of creating a 'toolkit' that seeks to tarnish the image of the country and Prime Minister Narendra Modi over the handling of the COVID pandemic. However, the Congress has denied the allegation and claimed that the BJP is propagating a fake 'toolkit' to defame it.
Last week, Twitter labelled as "manipulated media" a tweet by Patra on the alleged 'toolkit'.
Twitter says it "may label Tweets that include media (videos, audio, and images) that have been deceptively altered or fabricated".
Biswal said the Delhi Police is inquiring into a complaint in the the toolkit matter.
"It appears that Twitter has some information which is not known to us and on the basis of which they have classified it (Patra's tweet) as such. This information is relevant to the inquiry. The Special Cell, which is conducting the inquiry, wants to find out the truth. Twitter, which has claimed to know the underlying truth, should clarify," he said.
The police, however, refused to divulge the contents of the complaint or the identity of the complainant.
(With PTI inputs)