According to multiple reports, ISIS has claimed responsibility for the attack on a nightclub in Orlando that has left dozens dead and many more wounded.

This comes after an earlier report by NBC News that the shooter, Omar Mateen, swore allegiance to ISIS just prior to the attack.

Related:

REPORT: FBI investigating possible radical Islamic ‘leanings’ of Orlando terrorist; Update: At least 50 now reported dead

Orlando terrorist identified as Omar Mateen, ‘U.S. citizen from Port Saint Lucie, FL’; Update: BBC reports not on a watch list

An oversight? Hillary Clinton offers her thoughts to the victims in Orlando, but no prayers

Rep. Peter King tells Jake Tapper Omar Mateen was from Afghanistan and ‘trained in the use of weapons’

Gun ‘experts’ offer commentary after Orlando shooting

Omar Mateen’s father to NBC News: ‘This had nothing to do with religion’; Son was angry at gay people

Omar Mateen was reportedly a security guard and licensed to carry a gun [screenshot]

Kevlar helmet saves life of cop responding to Orlando terror attack

Sen. Bill Nelson (D-FL) ties Omar Mateen to ‘Islamic radicalism’ and ISIS

WATCH: ‘No one could have predicted this’ #OrlandoShooting

Florida Gov. Rick Scott calls Orlando shooting ‘clearly an act of terror’

Mateen swore allegiance to Islamic State before shooting

Actress Felicity Huffman informed her question to the NRA should be directed elsewhere

You won’t believe how Sen. Richard Blumenthal (D-CT) referred to the #OrlandoShooting

Mediaite writer trolls conservatives, ensnares liberals over Orlando terror attack