MANASSAS, Va. (AP) – The man charged in the 1975 slayings of two sisters who vanished from a suburban Maryland mall has been indicted on new charges in connection with an unrelated case in northern Virginia. Multiple news outlets report that a Manassas grand jury on Monday indicted Lloyd Lee Welch, Jr. on charges of rape, sexual battery and taking indecent liberties. Further details regarding the charges were not immediately clear. Welch is awaiting trial in Bedford County, Virginia, on charges of first-degree murder in the disappearance of 12-year-old Sheila Lyon and 10-year-old Katherine Lyon. The sisters were last seen walking from their house to the Wheaton Plaza Mall. The girls never came home, and no bodies were found.