Originally Posted by Brock
Who hired the hitmen? The old mute guy, or was he just used to finger Walt? Are the hitmen somehow controlled by Pollo?
We've known since early season 2 that Tuco's cousins were coming to the U.S. The hitmen are those cousins.
The real surprise is that they are involved with Gus Fring somehow, to the degree that they didn't kill Walter in order to depart for Los Pollos Hermanos immediately after they recieved Gus' text message. The way the scene was shot implied that Saul Goodman knows how to reach Gus too. That might have been a red herring, that Gus pulling the hitmen off was coincidence, but probably not.
EDIT: thinking about it more, I am unsure whether the "Pollos" text message was sent to Walter's cell or a cell on one of the cousins.