There has been a shooting at a high school in Maryland with possible casualties, according to multiple reports.
The shooting is at Great Mills High School in St. Mary’s County, south of Washington, D.C., authorities said.
The incident would come just over a month after a mass shooting at a Florida high school left 17 people dead.
WJLA says the incident has been “contained.”
A Twitter user who says they are in Great Mills says the school is in lockdown at “there’s already someone possibly dead. Please pray for us.”
— ABC 7 News – WJLA (@ABC7News) March 20, 2018
This is a developing story and will be updated.