NEW : Umar Patek showed no emotion as his sentence was handed down . Patek was found guilty of taking part in premeditated murder . He is currently serving a life term with the possibility for parole after 25 years. After 10 years on the run , he was arrested in January 2011 in Pakistan .
NEW : Umar Patek showed no emotion as his sentence was handed down . Patek was found guilty of taking part in premeditated murder . He has admitted helping mix explosives but denies involvement in the planning . After 10 years on the run , he was arrested in January 2011 in Pakistan .