Ajesh aka Appu,Akhil and Nithin, the three suspects, will be produced before the court on Friday.
Kannur Crime Branch superintendent of police A Srinivas, who is heading the team, said Ajesh committed the murder by illegally barging into Moulavi’s room and attacking him with a wedge- shaped weapon.
Police suggest the possibility of a hate crime.
Riyas Moulavi, a native of Kodagu and teacher of Issathul Islam madrassa, was murdered in the wee hours of Tuesday.
A gang barged into the compound of Muhayuddin Juma Masjid, Choori, and slit his throat in his room.