Paranur Circle Inspector Anilkumar said, V M Chandran, 36, the party's Chelakkad branch secretary and Bijith Lal, 24, Vilakottoor local committee member, were arrested from their houses at Kolavallur near Paranur this morning.
The duo, who have been charged under explosives act, were produced before the Chief Judicial Magistrate court at Thalassery and remanded to 14 days judicial custody, police said.
Two CPI-M workers were killed and two others seriously injured when a crude bomb exploded at Chettakandy village.