Three masked males, one of them with a gun, attempted to rob someone on the University of Minnesota campus before fleeing in a car early Sunday, according to the school.

The assault occurred about 12:45 a.m. near Harvard and Delaware streets, the university said in a public safety alert. All three wore masks and they left the scene near Centennial Hall in a silver sedan.

No more information was disclosed about their descriptions or who they targeted. Three nights earlier on campus and about six blocks to the northwest, there was another attempted robbery, the school said.

That crime took place about 10:25 p.m. Thursday near Pleasant Street and Pillsbury Drive. A single male in all dark clothing implied he had a weapon. No additional details were disclosed.