He is exactly right to question it.
As I recall, a foreign Muslim dignitary was the target and it appeared the persons trying to assassinate him shot up the crowd, seemingly to distract their work.
That’s what I heard too.
At the time there was a post detailing what transpired what amounted to an assassination attempt on one of Saudi crown princes. Luckily for him he had left earlier incognito and escaped with his life. That poor guy accused of the shooting never ever could have pulled it off all by himself, but it made a good story anyway being fed to the public who believe most everything. Just like the story about Roswell making the public believe it was “Just” an ordinary weather balloon..?
There was something suspicious because it appeared they knew about this guy in advance. Definitely a cover-up but we peons will never know the story behind the story.
That’s the problem...everyone’s “heard” something different.