UPPER DARBY, Pennsylvania (WPVI) -- An arrest has been made in what police are now calling the random murder of a 15-year-old in Upper Darby, Pennsylvania last spring. The same suspect is also suspected of stabbing a pregnant woman during a carjacking just two months before. Marson Weh, 24, was charged with first-degree murder in the death of Michael Garr, a 10th grader in the Upper Darby School District.