PATNA, June 3 -- Three persons, including a coaching institute director, have been arrested in connection with a violent clash outside the prominent Khan Global Studies Institute in Patna's Kadamkuan area on Tuesday night.

Police identified the three suspects as Roshan Anand, director of a coaching institute, Prince Gaurav, and Abhishek. They were produced before a local court and remanded in judicial custody on Wednesday.

The attack by a group of men took place outside Khan Global Studies, a popular coaching institute run by Faisal Khan, a celebrity educator known to millions of students as 'Khan Sir' for his low-cost exam preparation courses.

The exact nature of the attack remains under investigation.

"We were inside while teachers ...