Peoria police are investigating two armed robberies to citizens. One man told police a gun was held to his back and he was beaten near Dechman and Nebraska around 11:20 Wednesday night. Cash and a debit card were taken. The victim denied treatment. Then, around 1:00 Thursday morning police say one person was robbed by two white males, believed to be at gunpoint, at Abraham and Sons Amusement at 921 West Detweiler. The gun turned out to be fake but the victim was able to stab one of the suspects in the leg. Both suspects fled on foot. No one is in custody.