At least three people, including the suspect, have died and six others are injured after a shooting at a high school in St Louis, Missouri.
The gunman entered Central Visual & Performing Arts High School shortly after 09:00 local time.
The doors of the school building were locked and it was not immediately clear how the suspect entered.
St Louis Public Schools have said police “quickly stopped” the gunman.
The suspect, believed to be in his 20s, exchanged gunfire with police and later succumbed to his injuries.
Neither his motive nor his connection to the school of about 400 students has yet been identified.
A teenage girl was pronounced dead inside the school, while one woman died in hospital, police told local media.
Students were running out of the school when officers arrived and said the attacker had a “long gun”, according to the city’s police commissioner Michael Sack.
He said seven security workers on site had acted quickly to notify other staff and contact police.
Sourc e: BBC