Other mistake: In the scene where the store owner pulls out a shotgun and starts to shoot at the robber, you see the glass on the drink displayer shatter. However, if you look closer you can see that the soda bottles remain untouched.
Other mistake: When Saverio Guerra runs into the clothes line after the chase sequence with Martin Lawrence, you will notice that the clothes that fall on his face after he hits the ground were not on the clothes line, also the clothes that did fall off disappear.
Other mistake: In the beginning, when Miles gets out of prison and goes to visit his ex, when she's talking to him from upstairs window, someone is on a bike right behind him - frozen still and not moving. Then, when Miles goes to leave, no one is behind him or the bike.
Answer: Yes, however Malone is not a real cop, only pretending to be one. Therefore it is safe to assume he would not know procedures of the police department and would not think his prints would be run by the FBI. He thinks he is safe because he is a cop. That's how big his ego is.
SAZOO1975
Yes, but the reason they don't worry about fingerprints is because they decided to immediately set up the sting operation, since they only had hours before the package was to be delivered in 3 hours. So, they had to hurry and make it there in time to do the bust.