Bullet-riddled walls, blood-stained floors and SWAT cop's helmet with a BULLET HOLE in it: Haunting photos show the devastating scene inside Pulse nightclub where gunman massacred 49 people

Chilling photos showing the untouched devastation at Pulse nightclub in Orlando give an inside look to where 49 people spent their final moments during the deadly shooting on June 12, 2015. Large holes from bombs detonated by SWAT teams and dilapidated bathrooms shed new light on the means taken to rescue those held hostage in the nightclub by Omar Mateen, 29, who later died in a shootout with police.Mateen pledged allegiance to Islamic State for the attack which is recorded as the worst mass shooting in the history of the United States.