Ranchi: A couple have been arrested on charges of the murder of a 25-year-old man over illicit relationship at Domadih village under the Sonahatu police station limits of Ranchi district on January 31, police said.The accused have been identified as Sulochana Devi (24) and her husband Kshatrapati Mahto (25), police added.The headless body of Harihar Mahto (25), who allegedly had an illicit affair with Sulochana, was recovered from near the Kanchi river in Sonahatu on Sunday. The severed head was found about a kilometer away after hours of search, police further said.Officer in-charge of the Sonahatu police station, Prem Pradeep, said “Based on technical inputs, police detained the couple and interrogated them. They confessed to their crime and revealed the location of the body.”Probe revealed that Sulochana had been in a relationship with Harihar for the past two years. Kshatrapati caught them and asked his wive to call Harihar to their home on January 31. When Harihar reached the house, the three accused killed him, OC added.An FIR has been lodged and both accused have been sent to judicial custody. Hunt is under way for another accused, who is absconding. The murder weapon is yet to be confiscated, police added.