Which bank was robbed last night?

W: Did you hear of the robbery in the bank last night?
M: No, I didn’t. Which bank was robbed?
W: The bank in Green Street.
M: How much money was lost?
W: No a penny was robbed.
M: Really?
W: Yes, there were three robbers. One was trying to run away, but the police shot him in the leg and they arrested him.
M: What about the other two?
W: The other two were shot dead when they fired at the police.
M: Who called the police when the bank had been robbed?
W: A brave security guard of the bank.