Even then he might have escaped further notice if he'd ditched all the incriminating stuff. It's one thing to kind'a look like a guy in a low-quality pic; it's quite another to have the cops checking you out find all your murder gear with you.
Sure thing. They would know what the guy who kinda look like a photo of a wanted man is called. Doesn’t necessarily means they can pin anything on him. Obviously increases their chances, since they can work both backwards and forwards, but that is about it.
Assuming of course that the “he got just unlucky, a random person recognised them” is true, and not paralel construction for some other mean they don’t want to reveal.