It wouldn’t even have to be someone who looks like Luigi. They got the screen shots of Luigi from the hostel and found him based on the pictures, but they haven’t presented evidence that he was at the crime scene. If you look at the shooting video you can tell that the jacket worn by the killer is not the same jacket Luigi was recorded wearing at the hostel. Same with the fake ID. It only proves that was him at the hostel. They’ll need to present evidence that he was at the crime scene. They say they found a water bottle nearby that can be linked to him, we’ll see.
Yeah they were probably fiddling with the histogram in photoshop or something.