The memorial plaque of a Philadelphia police officer who died in the line of duty is missing and an investigation is underway ...

Fallen officer Charles Knox was honored with a plaque near where he was killed in 1992. The plaque appears to have been ...

Charles Knox, 31, was shot and killed the night of Aug. 30, 1992, while responding to an armed robbery at a Roy Rogers ...

PHILADELPHIA (WPVI) -- A plaque dedicated to a fallen Philadelphia police officer has gone missing, and now investigators are ...

The Philadelphia Police Department is asking for help in finding a missing memorial plaque that honors fallen Officer Charles ...

Investigators are searching for a missing plaque dedicated to a fallen Philadelphia officer who was shot to death during an ...

Charles Knox, 31, was fatally shot during a 1992 robbery at a former Roy Rogers restaurant. A $5,000 reward is being offered ...