Shooting at Great Mills High School in Maryland, school confirms

Great Mills High School in Maryland was on lockdown after a shooting on Tuesday morning, school officials confirmed.

The incident was contained and the St. Mary's Sheriff's Office was on the scene, the school said on its website. Maryland State Police also told Fox News they were responding to the incident. Agents from the Bureau of Alcohol, Tobacco and Firearms were also heading to the scene.

@SMCPS_MD

There has been a Shooting at Great Mills High School. The school is on lock down the event is contained, the Sheriff's office is on the scene additional information to follow. Parents/Guardians should go to Leonardtown HS for reunification with GMHS students

3:46 PM - Mar 20, 2018

The Sheriff's Office warned parents to not "respond to the school" but instead go to Leonardtown High School, where students will be transported.

NBC Washington reported multiple injuries, but that was not immediately confirmed by authorities.

Special agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives [ATF] are traveling to the school to investigate the incident.

@ATFHQ

BREAKING: Special Agents from @ATFBaltimore Hyattsville I and II Field Offices are en route to a shooting reported at Great Mills High School in St. Mary's County, Md.

The school is located about 60 miles from Washington, D.C.

The incident comes more than a month after the school shooting at Marjory Stoneman Douglas High School in Parkland, Fla. That massacre, carried out by a former student, left 17 people dead.

This is a breaking news story. Check back for updates.