An unnamed 28-year-old was detained on Thursday on suspicion of murder and perverting the course of justice.
Meanwhile - another man has already been charged with the murder.
Raphael Kokkinos, who’s 33 and lives on Polworth Road in Streatham, will appear at the Old Bailey on Tuesday.
Loeike’s body was found on fire on Commonside East, in Mitcham just over a week ago.