Timeline of Orlando shooting PULSE NIGHTCLUB Roof 5 metres 16 feet Patio cover FLORIDA Tallahassee Orlando Miami 200km 125 miles Men’s toilet Women’s toilet Exit Lobby Main entrance Women’s toilet Dance floor Bar Stage Stage Bar Back exit Outdoor deck Jun 12, 02:02 local time (06:02GMT): Omar Mateen enters Pulse nightclub in Orlando, Florida, armed with AR-15 type assault rifle and handgun, and opens fire. Around 320 people are inside Off-duty officer working for club engages in gun battle with gunman near entrance 2:09: Pulse posts on Facebook page: “Everyone get out of pulse and keep running” More police officers engage Mateen inside, forcing him to retreat to toilet where he holds hostages 2:22: Mateen calls 911, beginning series of conversations with police during which he pledges allegiance to so-called Islamic State group. He says he has explosives, which spurs decision to launch rescue operation Around 5:00: SWAT team storms building, detonating explosives and ramming rear wall with armoured vehicle. Some 30 people escape Mateen emerges from hole in wall and is killed in shootout with police. At least 49 people killed and 53 injured in worst mass shooting in U.S. history Source: Orlando Police Department Picture: Associated Press