Authorities now say that a student in Maryland who fatally shot a fellow classmate and seriously hurt another died from a self-inflicted gunshot wound during a confrontation with a school resource officer.Initial reports suggested that Deputy First Class Blaine Gaskill, the resource officer at Great Mills High School, in Great Mills, Md., might have killed the shooter, 17-year-old Austin Rollins.In a statement issued by the St. Mary's County sheriff's office said evidence indicates that last Tuesday, after Rollins fired a single shot that hit one student in the head and another in the leg, he was confronted in a hallway by Gaskill.Rollins, however, then "fired one fatal shot to his head; simultaneously DFC Gaskill also fired one non-fatal shot, which struck the weapon in Rollins' hand," it said.One of the two students hit by Rollins, 16-year-old Jaelynn Willey, died two days later after being taken off life support. The 14-year-old with the leg wound survived."All indications suggest the shooting was not a random act of violence," the sheriff's office said in the statement. "Rollins and the female victim had a prior relationship which recently ended. The investigation has not yet uncovered any public social media posts/threats made by Rollins."The Associated Press writes: