(CBS/WUSA/AP) CLARKSBURG, Md. - Montgomery County police say they believe they've found the remains of William McQuain, the 11-year-old boy whose mother, Jane McQuain, was found dead last week.
Police discovered the remains of a young, African-American boy at 9:11 a.m. Tuesday in wooded area of the county. Authorities began searching for William after his mother was found dead Wednesday night in the bedroom of her home in Germantown, about 30 miles northwest of Washington.
The medical examiner's office on Friday ruled that Jane McQuain died of blunt force trauma and stab wounds.
Police have been searching different trails and parks in northern Montgomery County, based on information they say they've received.
Jane McQuain's estranged husband, Curtis Maurice Lopez, was arrested in North Carolina Thursday morning as he tried to leave an EconoLodge and charged with first-degree murder, reports CBS affiliate WUSA. Lopez has waived his extradition and is due back in Montgomery County.
Ronald McCombs, Jane McQuain's ex-boyfriend, told The Associated Press that McQuain had recently been arguing with her estranged husband - generally about money - and that several times he refused to leave her condominium despite her pleas for him to get out.
Pennsylvania corrections records show Lopez served time from 1987 until his parole in 2000. Lopez and McQuain remained married while Lopez was in prison, but he reportedly had an almost nonexistent relationship with her during that time.