Philly police had been called many times to Walter Wallace Jr.'s house -- sparking questions about why he was shot

PHILADELPHIA — Police were called dozens of times in recent months about problems at Walter Wallace Jr.’s home, and had responded twice Monday to reports of disturbances at the West Philadelphia house before two officers answered a third call and shot him as he approached them with a knife, according to law enforcement sources.What happened during those earlier visits — including which officers responded and how much they knew about Wallace’s mental health problems — remained unclear Tuesday. Asked at a news briefing, Commissioner Danielle Outlaw declined to offer details about any prior conta...

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