All The Clues Together

After calculating all the evidence the FBI was able to reach the conclusion that these holes were made to rob the bank. So it means the robbery has already taken place then whey there was no news about it? And why was the police unaware of such an incident? The FBI was also confused and they knew there was the only way to find the answers to every question which was talking to the bank. They thought that the bank wasn’t aware of the robbery yet.