Attorneys for convicted sniper Lee Boyd Malvo will argue Wednesday that his six Montgomery County, Maryland, murder convictions should be vacated, WTOP has learned. Court records and sources familiar with the case said Malvo’s lawyers will ask Circuit Court Judge Sharon Burrell to vacate Malvo’s 2006 convictions in the Montgomery County deaths of James Martin, Sonny Buchanan, Premkumar Walekar, Sarah Ramos, Lori Ann Lewis-Rivera and Conrad Johnson.