A Joplin man is charged with the robbery of a local pharmacy. 33-year-old John Flood is charged with first degree robbery and armed criminal action. Investigators say Flood robbed the Walgreen Pharmacy at 20th and Main in Joplin Sunday afternoon. Police say flood allegedly held a knife to a clerk`s throat and threatened to kill her for the money. Flood remains in custody at the Jasper County Jail in Carthage.