A Johns Hopkins University student armed with a samurai sword killed a man who broke into the garage of his off-campus residence early Tuesday, a Baltimore police spokesman said.

According to preliminary reports, a resident of the 300 block of E. University Parkway called police about a suspicious person, department spokesman Anthony Guglielmi said. An off-duty officer responded about 1:20 a.m. to the area with university security, according to Guglielmi. They heard shouts and screams from a neighboring house and found the suspected burglar suffering from a nearly severed hand and laceration to his upper body, he said.