JACKSONVILLE, Fla. -

Police on Friday released the 911 calls from Tuesday's murder-suicide at Episcopal School of Jacksonville on Friday.

Police said 28-year-old Shane Schumerth brought an AK-47 on campus hidden in a guitar case, shot and killed head of school Dale Regan, then killed himself. Schumerth had been fired earlier in the day.

The first call into police came from someone who was in the office with Regan when Schumerth barged in. The caller calmly told the dispatcher what happened.

Dispatcher: "I need to know a description and where they're at."

LISTEN: 911 calls in Episcopal murder-suicide

Dale Regan, head of school at Episcopal School of Jacksonville Caller: "OK, they're in the headmaster's office. I was in there in the meeting with her."

Dispatcher: "OK, do they have the gun?"

Caller: "The individual broke in, had a guitar case, pulled out what looked like an AK-47."

Dispatcher: "Has anybody been shot?"

Caller: "I don't know because I ducked out of the room. And he came in. I've been busy locking down. There's a bunch of kids outside."

Dispatcher: "Were there shots fired?"

Caller: "Shots found, around seven or eight."

Dispatcher: "Center eight?"

Caller: "Seven or eight."

Dispatcher: "What is that, a building number?"

Caller: "No, seven or eight shots fired."

Dispatcher: "OK, you don't know if anybody's been shot or not?"

Caller: "No, I do not know because I did not go back in to find out."

Dispatcher: "And this was in the headmaster's office?"

Caller: "Yes."