Complex sentence: In an attempt to pull of a robbery the fake Geezer Bandit, was not as careful with his getaway, the police arrested him and say that they do not believe he is the real Geezer Bandit.
Split into simpler sentences: In an attempt to pull off a robbery the fake Geezer Bandit was not careful in his getaway, and ended up arrested by the police. The police said that they do not believe he is the real Geezer Bandit.