PARKLAND, Fla. (AP) — The Latest on a shooting at a Florida high school (all times local):

3:45 p.m.

Len Murray's 17-year-old son, a junior at the South Florida high school where shooting was reported, sent his parents a chilling text: "Mom and Dad, there have been shots fired on campus at school. There are police sirens outside. I'm in the auditorium and the doors are locked."

Those words came at 2:30 p.m. Wednesday. A few minutes later, he texted again: "I'm fine."

Murray raced to the school only to be stopped by authorities under a highway overpass within view of the school buildings in Parkland.

No information was immediately given to parents, Len Murray says. And he says he remained worried for all those inside.

"I'm scared for the other parents here. You can see the concern in everybody's faces. Everybody is asking, 'Have you hard from your child yet?'"

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3:15 p.m.

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.

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

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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.