At least 18 other people were treated for injuries, authorities said.
Workers are helped after a large portion of a hotel under construction suddenly collapsed in New Orleans.
McConnell urged the public to avoid the area and said another collapse was "absolutely" possible because of how unstable the building is. "Structural engineers are now assessing what led to the cause of the collapse".
The new hotel was set to open in spring 2020, with 350 rooms for hotel guests, in addition to 62 one and two-bedroom units available for purchase.
Authorities said there were no reports of people injured on the ground. Another video on social media was taken by someone aboard one of the city's famous streetcars as it approached the site while the building was collapsing.
City officials and Louisiana Gov. John Bel Edwards confirmed the death.
Nearby buildings have been evacuated.
The implosion happened Saturday morning in New Orleans, when the upper deck of the hotel started to crumble in on itself. apparently, after a crane fell from up above. Several construction workers had to run to safety as the Hard Rock Hotel, which has been under construction for the last several months, came crashing down.
"It looked like the concrete just slid from the top all the way down to the street", Worges said.
Plans for the mixed use development project were first unveiled in February 2018.