India’s main opposition party is accusing prime minister Narendra Modi of using hate speech, after he called Muslims quote, “infiltrators.”

It was some of his most incendiary rhetoric about the minority faith, and came days after the country began its weeks-long general election.

The remarks at a campaign rally Sunday drew fierce criticism that Modi was peddling anti-Muslim tropes.

This comes as a U.S. rights report found evidence of attacks on minorities, journalists, and opposing voices in India’s Manipur state and in the rest of the country.