The Kobe District Court sentenced a mob boss to 20 years in prison Thursday for murdering a graduate student here in 2002.

Takayuki Sato, 41, and five members of his gang abducted Kuniaki Uranaka, then a 27-year-old student of the Kobe University of Mercantile Marine graduate school, from a street in Nishi Ward by car in the early hours of March 4, 2002. They punched and kicked him and left him to die by a river.

Prosecutors had requested a life sentence for the murder.