"The event is contained," the school district said in a statement.
Two students were injured, one critically, after a classmate opened fire just before classes began at their Maryland high school Tuesday, police said.
The shooter, a male student who has not yet been named, pulled out a handgun and began firing in the hallway at Great Mills High School in Great Mills, Md., St. Mary’s Sheriff Tim Cameron told reporters.
A female student and male student were shot before a school resource officer stationed at the school pursued the shooter, Cameron said.
The student resource officer, or SRO, fired one round at the shooter, who also fired a round, and was killed in the incident, officials said.
It was not immediately clear whether the shooter was killed by the SRO or by a self-inflicted gunshot wound.
The 16-year-old girl who was shot was rushed to a hospital, where she was listed in critical condition with life-threatening injuries.
The 14-year-old boy who was also shot was taken to a different hospital and listed in stable condition.
Cameron told reporters there has been an indication that a prior relationship existed between the shooter and the female victim.
Police are working to confirm the nature of any potential relationship between the shooter and victims and it contributed to the incident, Cameron said.
Detectives were at the high school interviewing the SRO who engaged the shooter and other witnesses.
The high school had been placed on lockdown after the shooting, as officials with the sheriff's office, FBI's Baltimore field office and the ATF responded to the scene.
Parents were asked to avoid the school and instead report to neighboring Leonardtown High School’s auditorium to be reunited with their children.
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