Shots were fired inside a Maryland school Tuesday and the school was put on lockdown.
Maryland Governor Larry Hogan said in a statement: "Our prayers are with students, school personnel, and first responders".
CBS's Mola Lenghi has the latest.
Now on Tuesday, parents and students in the small Southern Maryland community of Great Mills are coming to grips with reality as another shooting happens, this time, so close to home.
Authorities said 16-year-old Jaelynn Willey had some type of a relationship with the shooter.
Cameron says the shooter and the school resource officer both fired and it wasn't immediately known if the officer's bullet killed the suspect.
The sheriff said that Blaine Gaskill, the deputy sheriff responsible for school security, had responded to the gunfire in the school hallway within "less than a minute" of the shooting of the 16-year-old girl.
Detectives are investigating whether the armed teenager targeted his female victim.
Parkland students and Great Mills students exchanged supportive messages on Twitter following Tuesday's shooting. Officials aren't sure when it will reopen. His injuries were not life-threatening.
Officers from multiple agencies are assisting with the investigation into the shooting, which included searching a auto and a home, combing through social media accounts, interviewing witnesses, reviewing footage from surveillance cameras and tracing the ownership of the gun used by the student.
A student shot and critically wounded two fellow students at a Maryland high school before a campus security officer ended the attack by wounding the shooter yesterday morning. "We're looking into the cost of ballistic glass, metal detectors, more cameras and more trained officers in our schools".
Cameron said at the news conference Tuesday, "This is what we prepare for. We simply can not watch this happen time and time again and take no action". "I didn't really expect for this to happen. But we don't have action", said the No. 2 U.S. House Democrat, Steny Hoyer, who represents the area. The shooting on Tuesday ironically took place 6 days after the student body's own gun control walkout and 4 days before the nationwide March For Our Lives, a protest organized by the Parkland survivors and advocated for by dozens of celebrities.
St. Mary's County Public Schools Superintendent Dr. Scott Smith said "this is our worst fear". You have to understand the situation that he responded in. "And I think while it's still tragic, he may have saved other people's lives".
While Hogan praised the school resource officer's quick response, he also slammed Maryland legislators for not taking quicker action to protect students at school. Police said they obtained a search warrant that led to them finding semi-automatic rifles, handguns and other weapons, along with ammunition. They are disrupting the status quo and proving a catalyst for change in our national and local conversations about the society we are, and more importantly, about the society we need to become.