A good rule for professional stick-up artists is to keep the gun under wraps until you enter the place you seek to rob.
The alternative is what happened Sunday afternoon in Desamparados.
The Fuerza Pública said that officers were on routine patrol Sunday afternoon when officers spotted three men with guns headed for a fast-food outlet.
Once they saw the presence of police, the three men attempted to flee on motorcycles, but they were detained. All have police records for the same type of crime and others.