Two carjackings, one involving a gun, occurred less than three hours apart and a block from each other near the University of Minnesota campus in Minneapolis, school officials said Monday.

About 8:35 p.m. Sunday, two males took a Volvo at SE. 8th Street and 13th Avenue, according to a crime alerted posted online by the university.

Shortly before 11 p.m. at SE. 7th Street and 13th Avenue, just a block away, two people arrived in a Ford Edge and pulled an occupant from a Chevrolet Cruz.

School officials did not say whether the carjackings were believed to be committed by the same people. They said both are being investigated by Minneapolis police. No arrests have been announced.

Police last year recorded more than 640 attempted or completed carjackings throughout the city.