SARGODHA A service-man was killed by a school teacher over old enmity in village near here. As per details Muhammad Ramzan son of Muhammad Yasin, a resident of Dhrema, had old grudge with Muhammad Ramzan son of Dula, army service-man. On the day of incident, Razman son of Dula attacked Ramzan son of Yasin and killed him with firing. The police have registered a case against the accused.