Gunfire could be heard during a 911 call, and Stollsteimer said Le's mother told authorities he shot one of her grandchildren.
Investigation focuses on suspect in Philadelphia-area fire and shooting that left 6 dead, 2 hurt
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Officers from Upper Darby saved their lives by dragging them out of danger, he said.
Search resumes at charred home after shootout, fire left 2 officers hurt and 6 people missing
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