A manhunt is under way across two counties after a man and woman were found stabbed to death in Surrey.
The bodies were found at a house in Fetcham, near Leatherhead, after Surrey Police were alerted in the early hours.
The pair, in their 50s, were found at a house in The Copse by another resident in the property.
The force is trying to trace Viktoras Bruzas, from Surrey, who they said was now likely to be in Sussex.
Another man in his 30s has been arrested in Walton-on-Thames on suspicion of conspiracy to commit murder.
Ch Insp Mark Preston, of Surrey Police, said officers who were called to the scene at about 00:30 GMT were dealing with a double murder. He said police needed trace Mr Bruzas as a matter of urgency.
"I would urge members of the public not to approach him but to call Surrey Police immediately if they know his whereabouts," he said.
Mr Bruzas, 38, from Walton-on Thames but originally believed to be from Lithuania, is thought to be driving a black Mercedes, registration AU11 WJY. Police said he also had connections to south-east London.