Imphal, July 20 -- Security forces and civil police arrested four male cadres from various underground groups in the past 36 hours as part of their ongoing efforts to counter insurgency and maintain peace in Manipur, police reported on Sunday.

Police alleged that the arrestees had engaged in extortion activities targeting government employees, fuel stations, transporters, educational institutions, and business communities in the valley districts.

In the first operation, security forces apprehended an active cadre of the proscribed Kangleipak Communist Party-People's War Group from the parking area of Polo Ground, Paona Bazar, under City Police Station in Imphal West district.

Police later identified him as Nanao, also known as Boboy (4...