Police in Florida said they arrested a 72-year-old man who allegedly pulled a gun on a fellow Walgreens customer and hid the weapon in the candy aisle. Riviera Beach Police said a clerk at the Walgreens store told them he heard Robert Warn mumble a racial slur when he entered the store Wednesday, and the victim, whose name was not released, told officers Warn pulled a gun on him during a dispute about cash in the store's pharmacy, the Palm Beach Post reported Friday. The victim exited the store and waved down officers who entered the store and asked Warn if he had a gun. The man initially told them he was unarmed and then admitted he had hidden the weapon in the store's candy aisle. The gun, an unloaded "small Colt, semiautomatic pistol," was found beneath a row of chocolate bars. Warn was arrested and charged with aggravated assault with a deadly weapon and evidencing prejudice while committing an offense. He was held in lieu of $150,000 bail and ordered to undergo a mental health evaluation.