A man has been jailed for life for the "random and vicious" murder of a fellow Polish national in Leeds.
Mariusz Rogowicz, 25, died after suffering head injuries in an assault on Harehills Road in April 2009.
At Leeds Crown Court, David Grabowski, 26, of Ashton Avenue, Harehills, was told he would spent at least 10 years in prison.
Grabowski's mother, Barbara Wisniewska, 44, was found not guilty of assisting an offender.
Mr Rogowicz, who was also known as Stowamir Lackowski, had lived around the Chapeltown area of Leeds.
During the murder investigation officers from the Polish police service had worked with detectives in Leeds and detectives from West Yorkshire had made inquiries in Poland.
Det Supt Paul Taylor, from West Yorkshire Police's homicide and major inquiry team, said: "The critical breakthrough came as a result of significant work to publicise the murder investigation through the Polish media, both in UK as well as Poland.
"As a result of this we had some information passed to us from Poland, via Interpol, which led to the arrest of David Grabowski.
"Mariusz died as a result of a senseless and completely random act of extreme violence and I hope that today's verdict will bring some closure to his family and in particular his father Jan who has been here for each day of the trial and has acted with the utmost dignity throughout what has been an extremely difficult time."