Gunman Dead After Injuring 2 Students at High School Prom in Wisconsin

— -- An 18-year-old gunman who injured two students at a high school prom in northern Wisconsin Saturday night died after he was shot by police, officials said.

The shootings took place just after 11 p.m. local time when the suspect showed up with a rifle outside Antigo High School in Antigo, Wisconsin, and started shooting, said Eric Roller, the city's police chief.

Two students, a girl and a boy, were shot as they exited the school, police said. District Administrator Donald Childs told ABC News the boy is an Antigo student and the girl is his date from out-of-state.

The Unified School District of Antigo said in a statement that the gunman, identified by police as Jakob Wagner, had a high-powered rifle and a large ammunition clip.

Officers already in the parking lot patrolling the event returned fire and shot the suspect, police said.

The Langlade County coroner said Sunday that Wagner died after he was transported to a local hospital. It was not immediately clear if he was a student.

The two victims were transported to Aspirus Langlade Hospital, where the girl had since been discharged, police said. The male student was undergoing surgery Sunday for non-life-threatening injuries, police said.

After the shooting, everyone at the prom was escorted from the school.

The school district said in a statement that "quick actions" by police and staff "prevented what might have otherwise been a disaster of unimaginable proportions."

Childs told ABC News the district anticipates a normal school schedule on Monday.

The Associated Press contributed to this report.