Family and neighbors look on as police investigate a fatal accident on Roosevelt Boulevard in the Olney section of Philadelphia on Tuesday July 16, 2013. Philadelphia police are investigating whether ... more 
Family and neighbors look on as police investigate a fatal accident on Roosevelt Boulevard in the Olney section of Philadelphia on Tuesday July 16, 2013. Philadelphia police are investigating whether cars may have been drag racing when a mother and two young sons were struck and killed attempting to cross a busy highway. The woman's two other sons ages 4 and 5 are in critical condition. (AP Photo/ Joseph Kaczmarek) less 
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Associated Press | Photo By Joseph Kaczmarek
Wed, Jul 17, 2013 7:03 AM EDT