Naxalites are suspected to have killed four persons including three Special Police Officers (SPOs) in two separate incidents in Bijapur district of Chhattisgarh, police said on Thursday.

Bijapur Superintendent of Police (SP) in-charge JS Watti said that the suspected left-wing extremists had killed three persons including two SPOs in Aramangi village and one SPO in Belchar village Wednesday night.