Curtis Lopez, the Germantown man accused of killing his estranged wife and fatally beating his 11-year-old stepson with a baseball bat wants a judge to bar prosecutors from using his cellphone records as evidence, reports the Associated Press.

Jane McQuain, 51, was found dead in her apartment on Oct. 12, and her son, William McQuain, was found in a wooded area near Interstate 270 in Clarksburg on Oct. 16.

Police used cellphone data to track Lopez's movements around the time of the killings. He was captured in North Carolina. Lopez's lawyers argue that the use of the phone records violated his right to privacy.

-- Scott McCabe