Cape Town - Police have identified a man they believe to be the mastermind behind the brutal murder of Tewie and Eurika Human last month in their Great Brak River home.This after the arrest of a 26-year-old man from Wolwedans, who appeared in the local magistrate's court on Thursday.Western Cape police spokesperson Captain Malcolm Pojie said accused Thamsamqa Howard Sishuba was linked to the murder through forensic evidence gathered during the initial investigation on the scene."The couple was found [dead] at their residence in Sandheuwel Street, Great Brak River, on June 18 when a neighbour saw the body of the [woman] through the window," he said. "She then alerted the local police who, on arrival, also discovered the body of the husband in the garage after the doors had to be broken down to gain entrance to both the house and the garage."Eurika, 62, was stabbed to death. She sustained four stab wounds to the neck and chest.Suspect may have fled the countryTewie, 72, was hacked with a panga, suffering fractures to his upper body and head. Sishuba appeared in the Mossel Bay Magistrate's Court in connection with the double murder on Thursday.The case was postponed to Friday for legal representation. Pojie said police had reason to believe that Lebohang Rethabile Lekoro, understood to be in his late 20s to early 30s, was the mastermind behind the killings."We have information that suggests that the suspect has fled the country after the commission of the crime. We have obtained a warrant for his arrest." Lekoro is of medium, slender build, has a brown complexion and sports short black dreadlocks.Anyone with information on his whereabouts is urged to phone investigating officer Detective Warrant Officer Gerald Rabie on 044 620 8309.