Murder charges against two Shreveport men have been dropped and another man has been arrested. The Caddo District Attorney's Office says new evidence discovered by Shreveport police this week in connection with the murder of Roshenna Crowder has led to the dismissal of first-degree murder indictments against Barnell Johnson and Shawnee Bernard for Crowder's murder and the issuance of an arrest warrant for Demario Little. He's now been arrested and booked. D-A Charles Scott ways perjury charges will be pursued in connection with the previous testimony before the grand jury that investigated the Crowder murder.