The 29-year-old, identified as Mohamed Shahim, is reportedly a resident of Hemmathagama area in Mawanella.
He is accused of conducting classes on the extremist ideologies in Muttur and Oluvil areas back in 2018, under the directives of Zahran Hashim, one of the perpetrators of Easter Sunday bombings.
The suspect has been brought to the headquarters of the TID. Accordingly, a detention order is expected to be obtained after producing him before the court later today (May 21).
A total of seven suspects, who had allegedly conducted classes on extremist ideologies, are currently in the custody of the TID, the spokesperson said further.