Vatakara town came to a standstill on Tuesday following a hartal called by opposition parties in protest against the arrest of opposition councillors on Monday.
Shops in Thazhe Angadi that used to boycott hartals too joined the protest this time in support of their neighbours.
Vehicles had been excluded from the hartal.
Most shops, including fish markets and shops in Adakkatheru and Peruvattumthazha, remained closed.
Various organisations have joined the protest.