The Latest on the Orlando nightclub shooting (all times local):

4:45 p.m.

An attorney representing the city of Orlando says all 911 calls from the Pulse nightclub shooting have been released except for calls exempted under Florida law because people can be heard being killed.

Attorney Darryl Bloodworth said during a court hearing Friday that the city classified as exempted those specific calls made from or going into the nightclub during the worst mass shooting in modern U.S. history.

He says almost 230 calls, or more than a third of the 911 calls, fall into the exemption.

Rachel Fugate, an attorney for two dozen media groups that sued the city over the records, says the city's classification is too broad.

A hearing will be scheduled on the matter at another time.

The city initially said another nearly 400 calls also were exempted because they related to the investigation into the massacre carried out by gunman Omar Mateen, but the city made most of those calls public this week.

The June 12 nightclub attack claimed 49 lives and seriously injured 53 others.

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Noon

A half hour into the worst mass shooting in modern U.S. history, the gunman called a 911 operator and claimed responsibility for the massacre at a gay nightclub in Orlando.

Transcripts released Friday by the city of Orlando show Omar Mateen's first call to police from the Pulse nightclub and also disclose his conversations with police negotiators.

During his first call, Mateen pledged allegiance to the Islamic State group and said: "I want to let you know I'm in Orlando and I did the shooting."

A dozen minutes later, a police negotiator called him. Mateen tells the negotiator the U.S. needs to stop bombing Syria and Iraq, adding, "They are killing a lot of innocent people."

The June 12 nightclub attack claimed 49 lives and seriously injured 53 others.