Anwar Ali, a professor at the prestigious National Defence Academy in Pune, was on Monday booked under the Prevention of Terrorism Act in connection with the March 13 blast in a local train in Mulund in Mumbai.
Ali, who teaches Urdu at the NDA, was produced before a special court, which remanded him to police custody till May 26.
Ali was arrested on Sunday night. He is the ninth accused arrested in the Mulund blast case.