A Maryland high school was on lockdown Tuesday morning after reports of a shooting, authorities said.
Police were at the scene at Great Mills High School in Great Mills, about 70 miles south of Washington.
Agents with the Bureau of Alcohol, Tobacco, Firearms and Explosives were also responding.
The St. Mary’s County Sheriff’s Office said in a statement that the incident was “contained” but parents should not go to the school.
“The school is still on lockdown and we’re working on getting the students back with their families,” Corporal Julie Yingling, a St. Mary’s County Sheriff’s Office spokeswoman, told MSNBC.
Initial reports of the shooting came after classes at Great Mills began at 8 a.m. ET. About 1,600 students attend the school.
The incident comes ahead of a national march Saturday against gun violence following a mass shooting at Parkland, Florida, high school last month.