Two charges against a man accused of robbing Bo's Express in Frederick County are certified to a grand jury.
Joshua Turner is accused of robbing the store in January and attacking the store's clerk.
Officers say surveillance pictures show Turner choking the man.
A robbery charge against Turner in Winchester was previously certified to a grand jury.
Winchester police Turner robbed Handy Mart.
© Copyright 2013 TV3 Winchester / Gray Television Group, Inc. All Rights Reserved.