A private interment will be held Tuesday;May 23;1978;at 11 a.m.in Belle Vernon Cemetery for Peter Roskovich;49;a former resident of Arnold City;Belle Vernon;who died on Saturday;May 19;1978;at 9 a.m.in St.Vincent Hospital and Medical Center in New York City.  Mr.Roskovich;a U.S.Army Korean War veteran;was living in New York City.  He was born July 5;1928 in Star Junction;a son of the late John and Eva Madulich Roskovich.  Survivors include four brothers;Frank Roskovich of Belle Vernon;George Roskovich of Hialeah;Fla.;John Roskovich of Fayette City R.D.and Charles Roskovich of Ft.Lauderdale;Fla.;and five sisters;Helen Stankovich;Mary Tokar and Anna Kudlac;all of Bentleyville;Eva Roskovich of Pittsburgh and Julia McKevitt of Fayette City R.D.  Arrangements and the private interment is being handled by the Howard W.McCrory Funeral Home in Fayette City.