It's highly unlikely that after a month, police have been looking for you......Maybe CCTV didn't film anything or they've seen it, hard to recognise....who knows?
What's important is that you've learnt from this and hopefully, if ever faced with a similar situation, you won't act in the same way.....
I don't condone what you did in any shape or form, but understand that sometimes in life, you have situations that occur that you rather didn't, and if you can relive the moment, you'd handle it differently.....Just take this as a warning and get on with your life.
Good luck, tim and please, think before you act in future. :-)