Another CPM worker was arrested by the Crime Branch team which investigates the murder of IUML worker Mansoor in Kannur on Tuesday.
The accused were brought to the place of crime under tight security.
This was revealed while checking the mobile tower location of the duo.
Addressing the peace committee meeting, Collector TV Subhash called for the sincere support and cooperation of all the people concerned.
The murder of IUML worker near Keezhattoor in Malappuram has triggered a political blame game between the CPM and the UDF.
Condemning the incident, Leader of Opposition in the state assembly, Ramesh Chennithala said it was a political murder carried out by CPI(M) workers.