Intelligence agencies in Kerala have alerted the government that ISIS has listed two High Court judges and some politicians as targets, according to the Press Trust of India.

A report with details has been given to Chief Minister Pinarayi Vijayan, the news agency claimed, citing unnamed police sources.

Over the weekend, six people from the Kerala state were arrested for allegedly plotting terror attacks in the country. They were identified and found by the country's top anti-terror body, the National Investigation Agency or NIA, which is connecting the dots in the disappearance of about 20 people who allegedly left Kerala to join ISIS in Syria.

Kerala's top police officer, Loknath Behara, said the state police is on high alert after this weekend's arrests and is monitoring security in cooperation with central agencies.