A judge sentenced an Indian Head teenager on Thursday to 10 years in prison for his role in an attack on a morning jogger, bringing to an end the fourth and final prosecution stemming from the January assault.

Charles County Circuit Court Judge Robert C. Nalley imposed an additional sentence of 15 years on Randy Paul Rogers Jr. that he suspended.

Rogers, 18, pleaded guilty July 1 to a conspiracy charge in the Jan. 23 stabbing attack.

Prosecutors said Rogers drove the pickup used by youths who attacked a White Plains man after a night of drinking and roaming around western Charles County.

The youths spotted Ronald Oliver, 60, who was out on his usual four-mile morning run, prosecutors said. Prosecutors said Rogers stopped the truck and waited inside as three boys jumped from the vehicle's bed, surrounded Oliver, knocked him to the ground and stabbed him three times.

According to testimony at an earlier trial, one of the assailants thought that such an attack would get him into a criminal gang.

Oliver was treated at Civista Medical Center in La Plata and released. His wife testified in July that Oliver gave up jogging, in part because of persistent, unexplained pains in his feet.

The youth found guilty of stabbing Oliver--Alexander Scott Teacher, 16, of Waldorf--was convicted of assault and sentenced to 20 years in prison, with all but 10 years suspended.

Two other boys admitted involvement in the assault and have been placed in the custody of juvenile authorities.