PARKLAND, FL (AP) Updated 3:22 p.m. CT:

Authorities say the shooter at a South Florida high school is now in custody. The Broward County Sheriff’s Office gave no details in briefly tweeting that development. It did not identify the shooting suspect nor say how the person was taken into custody.

Television footage showed police putting a person in the back of a police car outside the high school.

Previously reported:

Authorities say a shooter at a Florida high school is still at large.
The Broward Sheriff’s Office shared the information on its Twitter account after Wednesday afternoon’s shooting at Marjory Stoneman Douglas High School in Parkland.

Initial reports indicate at least 20 people were wounded.

Coral Springs Police said on their Twitter account Wednesday that the school is locked down and that students and teachers inside should remain barricaded until police reach them.

TV footage showed at least one person being wheeled to an ambulance on a gurney while emergency workers appeared to be helping others on the sidewalk. The news broadcasts also showed students running across the street.

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2:30 p.m.

Authorities say they’re responding to a shooting at a Florida high school.

The Broward Sheriff’s Office has told news outlets the shooting occurred Wednesday afternoon at Marjory Stoneman Douglas High School in Parkland.

It wasn’t immediately clear how many people were wounded.