New Delhi (CNN Business) Facebook is taking down hundreds of suspicious accounts linked to the two main parties contesting India's election.

With the campaign in full swing, the company removed 687 pages and accounts linked to the country's main opposition party — the Indian National Congress (INC) — for "coordinated inauthentic behavior," it said in a statement Monday.

"The individuals behind this activity used fake accounts," said Nathaniel Gleicher, Facebook's head of cybersecurity policy. "While the people behind this activity attempted to conceal their identities, our review found that it was connected to individuals associated with an INC IT cell," he added.

Facebook said it had also removed 15 pages, groups and accounts that frequently posted content supporting the Bharatiya Janata Party (BJP) of Prime Minister Narendra Modi and criticized his political opponents including the Indian National Congress.

those profiles were linked to people associated with worked on government projects and reportedly The company saidthose profiles were linked to people associated with Silver Touch , an Indian tech firm that hasworked on government projects and reportedly developed Modi's personal mobile app