"When the shooting took place, our school resource officer, who was stationed inside the school, was alerted to the event and the shots being fired".
Police are responding to a reported shooting at a high school in Maryland. The male student was taken to MedStar St. Mary's Hospital in stable condition. President Donald Trump on Twitter earlier this month said he believes allowing teachers to carry concealed weapons and having armed guards on campus would serve as a "deterrent" to shooters.
#GreatMills HS student: I have the right to a free education, I should have the right to be safe while doing it.
Emma González, a Parkland senior and activist, tweeted to Great Mills students on Tuesday morning that "we are Here for you". The resource officer "fired a round at the shooter, simultaneously the shooter fired a round as well", Cameron said.
Yingling says the two victims were shot, but she doesn't know how the shooter was injured.
A representative for Great Mills High School sent out a message confirming the shooting and saying the sheriff's office was on the scene.
Cameron says a female student and a male student were also wounded in the shooting in a hallway at Great Mills High School in southern Maryland.
St. Mary's County Tim Cameron told a news conference Tuesday morning that the shooter and the officer both fired a round and it wasn't known if the officer's bullet killed the suspect.
Great Mills High School has an enrollment of just over 1,500 students, and the student body was about 56% minority students and had a four-year graduation rate of 91%, according to the school's 2015-16 improvement plan.
Deputies, federal agents and rescue personnel, converge on Great Mills High School, the scene of a shooting, Tuesday morning, March 20, 2018 in Great Mills, Md.
Two witnesses, who do not attend the school, told WUSA9's Mike Valerio that they were on a school bus leaving the high school parking lot when they saw students just running out of the building. No students or parents could be seen outside at midmorning.
Student Mollie Davis told CBS News over Twitter that she heard what sounded like a loud balloon pop.
Special Agents with the ATF Baltimore as well as the FBI Baltimore are also at the high school.
Maryland Gov. Larry Hogan and Rep. Steny Hoyer tweeted that they're monitoring reports and urged people to follow the instructions of local law enforcement at the scene.
The Parkland massacre has inspired student-led "March for Our Lives" rallies against gun violence and mass shootings that are set for this Saturday, including one in Washington. A shooter in Parkland, FL, killed 17 people February 14 at Marjory Stoneman Douglas High School.