It has been reported that several people have been injured at a high school in Maryland after a gunman opened fire.
The school district said; "The Sheriff's office is on the scene; additional information to follow", adding that the siutation has been contained, according to CNN.
An FBI spokesperson for the Baltimore field office said that agents were on the scene.
According to sheriff's office spokeswoman Cpl Julie Yingling, three people - including the shooter - were shot. The BBC says that all three have been transported to hospital.
It has since been reported that the gunman has died from a gunshot wound. An armed guard on campus is believed to have "exchanged gunfire" with the attacker, reports the BBC, though it is not yet known whether he was hit by the guard or shot himself.
This is a breaking news story and will be updated as more information becomes clear.