One person is dead and another is wounded in a shooting at a high school just outside Washington DC, reports say.
The shooting is reported to have happened just before 5pm (local time), about two hours after classes finished.
A woman has been pronounced dead, and another person has been taken to hospital, WBALTV says.
No students are said to have been involved in the incident.
High Point High School is in the suburb of Beltsville, Maryland, between the United States capital and the city of Baltimore.