NORMAL - Another round of live .22-caliber ammunition was found on the Illinois State University campus Monday, more than three weeks after nine similar rounds were found at three separate campus locations, police said.

The Super X brand round was found by a ISU parking services employee around 10 a.m. in Lot G83 near the Ropp Agriculture Building, an ISU police report said. The round was scuffed and in poor condition, and it had apparently been there for some time, the police report said.

Two rounds were found in a ninth-floor men's restroom of Atkin residence hall April 19. Six rounds were also found on the front porch of Dunn-Barton residence halls, and another round was found near DeGarmo Hall. All were .22-caliber, Super X brand.

Police believe the April rounds came from the same source, but officials said there were few real leads after interviews with possible witnesses and those who called police after discovering the rounds.

If a student was responsible for bringing the ammunition to campus, the student likely would be in violation of ISU's student conduct code, university officials said in April.

Police have stressed that no weapons have been found and no individuals have been found to be carrying weapons.