The bag they missed

A policeman gave me some questions for the report. I said that 6 men attacked my van. It was full of bags. One of the men tied me up and they searched to steal the bags. I couldn't do anything. The thieves tied me behind my back. I tried to free myself. The policeman asked me what was in the bags. I answered that there were some letters in the bags, but in the letters there was all money.