And did the guy really think he wouldn't be recognized just bc of the mask? Obviously detectives are going to have co-workers look over surveillance videos...they'd probably be able to identify the "man in the suit" pretty quickly
An understated fact of most criminals is they are notoriously dumb. I mean, think about it, you begin stealing money, you think you can away with, then you think you can get away with invasion, murder, and disposal of the body. You really have to be dumb to even embark on this adventure.