Police in India's capital served a notice at Twitter's offices late Monday, seeking information for a complaint about why a tweet by the spokesperson of the ruling Hindu-nationalist party was tagged as "manipulated media."

Tensions have been high between the Indian government and the U.S. social media giant, after Twitter earlier this year reversed its blocking of a number of accounts critical of New Delhi's new agriculture laws following a request from authorities.

An Indian climate activist was arrested in February after allegedly helping to create a guide to farmer protests against the laws.

The government last month also ordered Twitter and Facebook to remove dozens of posts critical of Prime Minister Narendra Modi's handling of the coronavirus crisis.

The latest spat followed Twitter's labeling of a tweet on Tuesday by ruling Bharatiya Janata Party (BJP) spokesperson Sambit Patra as "manipulated media."

He had shared a document allegedly showing the opposition Indian National Congress party's masterplan to contrast the BJP's efforts to combat the pandemic with theirs.

Congress tweeted that it had sent a letter to Twitter's headquarters in the U.S., calling for Patra's account as well as that of several other BJP representatives to be permanently suspended.

The opposition party alleged that the document shared was fake.

Delhi Police said that they had gone to Twitter's offices to serve the notice about the tweet, but called it part of a "routine process."

"Delhi Police is enquiring into a complaint in which clarification is sought from the Twitter regarding the classification of a tweet by Sambit Patra as 'manipulative,'" police said in a statement.

A Twitter spokesperson said it had "no comment" about Delhi Police's visit to its offices.

Under Twitter's rules, a post is tagged as "manipulated media" if it includes "media (videos, audio, and images) that have been deceptively altered or fabricated."

Modi and the BJP have been criticized for their slow response to a new wave of COVID-19 infections that has pushed India's healthcare system to breaking point.

India has reported just over 26.7 million COVID-19 infections and more than 300,000 deaths, according to health ministry data, but experts warn that the actual toll could be much higher.