PHILADELPHIA (CBS) – Police in Philadelphia say a robbery suspect was shot and killed by a store owner on Monday.

Around 5 p.m., the suspect, who was armed with a knife, reportedly attempted to rob Stan’s Health Food Store at 7100 Frankford Avenue.

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The female owner, reportedly a former police officer and Secret Service agent, then fired a handgun and shot the 47-year-old suspect once in the left side above the buttocks.

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Police say the suspect was taken to Frankford-Torresdale Hospital in extremely critical condition where he later died.

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The store owner was not injured and is not expected to face charges.