Update to this story.
The Army is denying they had live fire rounds, and Alistair Beach notes that multiple witnesses say it was NOT the army that did the shooting.
However, multiple people ended up with birdshot wounds, including a BBC reporter.
Via NY Times:
As my colleagues Ben Hubbard, David Kirkpatrick and Mayy El-Sheikh report from Cairo, large protests in support of the ousted president Mohamed Morsi were marred by violence on Friday, when witnesses said that at least five demonstrators were killed by security forces outside the Republican Guards barracks where it is believed Mr. Morsi is being held.
Reuters reported that one of its journalists saw Egyptian security forces fire into the air, then “heard shotgun fire” and saw “at least eight demonstrators hit,” as a military helicopter flew over the crowd.
Simon Hanna, a British-Egyptian journalist in Cairo, drew attention to a video posted on YouTube on Friday that appeared to show at least one pro-Morsi protester shot in the head from close range by Egyptian troops standing behind barbed wire outside the barracks where Mr. Morsi is believed to be held. The video contains graphic content.
Update:
Not to go down the rabbit hole a bit, but this video seems to show what appears to be military firing into the air. They don’t appear to be firing at anyone. Indeed there sounds to be other shots not coming from them, although it is hard to tell.
The news team who shows it also seems to be focusing attention on a man in civilian clothes with what may be a long rifle in vicinity of the man shot.