Twitter blocked dozens of accounts in India, including that of a leading news magazine, on Monday after the government said that users were posting content aimed at inciting violence.
But it later unblocked some of these accounts.
"Twitter unilaterally unblocked accounts, tweets despite the government's order. Twitter is an intermediary and they are obliged to obey the direction of the government," the source, who declined to be named as the notice sent to Twitter was not public, told Reuters.
India's Home Affairs Ministry had demanded the suspension of "close to 250 Twitter accounts" that were allegedly posting content that sought to foment violence, a government official previously told Reuters.
"Content with #ModiPlanningFarmerGenocide was posted on Twitter, which was designed to inflame passions, hatred and was factually incorrect," the technology ministry source said.
Twitter declined to comment on the notice.
Tens of thousands of farmers have camped on the outskirts of New Delhi for months demanding the withdrawal of new laws that they say benefit private buyers at the expense of growers.
Prime Minister Narendra Modi’s government denies this, saying the reforms open up new opportunities for farmers.India's IT ministry did not immediately respond to a request for comment.