The BJP has moved the Telangana High Court alleging Kumar was arrested "illegally" and "without any valid reason".

Kumar was arrested at around 11 pm on Tuesday.

The BJP supporters had staged a sit-in protest outside the police station demanding Kumar's release.

Slamming Chief Minister K Chandrasekhar Rao, BJP IT Cell head Amit Malviya tweeted, "In a midnight operation, Telangana police has arrested BJP state President Bandi Sanjay Kumar on fabricated charges of being involved in secondary school paper leak. This won’t end well for KCR."

Prime Minister Modi is scheduled to visit the Bharat Rashtra Samithi (BRS)-governed state on Apr 9 to inaugurate Vande Bharat Express.