Terry Knowles, who witnessed the plane crash in Fort Lauderdale, Florida, told the Associated Press the aircraft was "an instantaneous fireball" when it hit the ground.
Mr Knowles said:
I was working on a car, and I heard the engine behind me. I turned around and saw the plane coming right over the building in front of me.
It hit the ground and exploded. It was an instantaneous fireball.
More top news
Authorities say Ai Weiwei failed to disclose a previous "criminal conviction" - though his supporters say he was never even charged.
The supermarket made the change after getting feedback from customers who said they felt under pressure as they finished their shop.
Harry Potter fans have been left sorely disappointed after the slightly misleading hashtag #NewHarryPotterBooks began trending on Twitter.