Orlando Police chief John Mina detailed his officers’ response to the tragic terror attack at a gay nightclub in Orlando, Florida during a press conference on Monday morning.
“We had an extra duty, off duty officer working for Pulse nightclub in full police uniform. At about 2 o’clock he responded to shots fired. He did engage in the gun battle with the suspect somewhere near one of the entrances,” Mina said. “Shortly after that, additional offers responded.”
Mina says the additional officers “made entry while the suspect was shooting and engaged in another gun battle.”
Omar Saddiqui Mateen, who has been identified as the killer in the worst mass shooting in United States history, called 911 during the attack and pledged allegiance to the leader of ISIS. At last count, the siege left 49 dead and 53 injured.
Authorities told ABC News that Mateen had been “on the radar” of U.S. terrorism agencies but was not the subject of any specific investigation.
After determining that hostages held by Mateen were at immediate risk of death, Mina says he authorized the use of explosives to open a wall in the bathroom where the gunman was holed up.
“Further loss of life was imminent. I made the decision to commence the rescue operation and do the explosive breach,” Mina said. “[Mateen] was ultimately killed.”
Massacre in Orlando: A Timeline of Terror (Photos)
Orlando terror suspect Omar Mateen in an undated photo. He is the gunman behind the deadliest shooting in U.S. history, which claimed 50 lives.
Orlando Police Department
Mateen entered Pulse, a popular LGBT night club with an intent to kill. Around 2 a.m., he began shooting patrons with an assault rifle.
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About 20 minutes into the shooting, Mateen placed a 911 call pledging allegiance to ISIS and referencing the Boston Marathon bombers. First responders arrived on the scene to find carnage inside and outside the club.
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Around 5 a.m., authorities broke down a wall and exchanged gunfire with Mateen, who had taken hostages. Mateen was killed.
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During a morning press conference, Orlando mayor Buddy Dyer amended the casualties from 20 to 50. Thirty-nine (including Mateen) were found dead at the club, two died outside, and nine died en route to the hospital. Fifty-three were injured.
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Pulse remained an active crime scene Sunday as authorities worked to identify the victims.
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Authorities descended upon Mateen's apartment Sunday afternoon to collect evidence and find a motive behind the shooting.
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A bomb squad was also brought in to sweep for explosives.
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Family and friends of the victims continue to await word. Authorities have yet to notify many next of kin.
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Omar Mateen killed 50 people in the deadliest mass shooting in American history
Orlando terror suspect Omar Mateen in an undated photo. He is the gunman behind the deadliest shooting in U.S. history, which claimed 50 lives.