Mass shooting in Orlando nightclub.

Pulse Shooting: The shooter inside the club is dead.

— Orlando Police (@OrlandoPolice) June 12, 2016

DETAILS: Hostages trapped in Orlando nightclub, shooter barricaded inside https://t.co/l5hIzBjB5f pic.twitter.com/eHRpLz2jYk

— RT America (@RT_America) June 12, 2016

MORE: Shooter at Orlando night club may have a bomb - local reporter https://t.co/l5hIzBjB5f pic.twitter.com/RfYI56LUM1

— RT America (@RT_America) June 12, 2016

Sounds like there are now at least 23 injured at Pulse Nightclub in #Orlando. Adding prior media reports + scanner traffic.

— Robert Moose (@RobertMoose) June 12, 2016

A shooting has been reported at nightclub in Florida city of Orlando - attacker is said to have taken hostages https://t.co/iRSlnr5riL

— BBC Breaking News (@BBCBreaking) June 12, 2016

#BREAKING VIDEO: Mass shooting at Pulse night club in Orlando. 20+ victims being treated pic.twitter.com/g6bLM6JP17

— Joel Franco (@OfficialJoelF) June 12, 2016

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#Periscope: Mass #Shooting in Orlando Fl https://t.co/nQAB9hjPR4 #Orlando #livestream

— Tammy Harper (@tammyharper02) June 12, 2016

Mass shooting in Orlando nightclub.