Call me crazy, but it sure looked like his lower neck/collarbone area was bruised.

They made such a show of pointing out Naz's actions on each of the video locations (gas station, station merchant, toll plaza etc) that you know the video will come into play

No he wasn't, and the kid that was brought in lied and said he was out walking alone.

the blood on his hand is from when he cut it on the broken glass re-entering the house

Don't forget the several issues with chain of custody on the evidence pointed out in the first episode, that will all factor into the proceedings.