Huge update on the 1957 Boy in the Box murder with victim Joseph Augustus Zarelli identified by Philadelphia police

SHOCKING details about the “Boy in the Box” were revealed in a press conference on Thursday.

The child, discovered abandoned in a bassinet box in February 1957 and eventually known as “America’s Unknown Child,” was identified as Joseph Augustus Zarelli.

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In a press release, authorities said Zarelli was born in January 1953, four years before he was killed by a mysterious killer.

Detectives also said they found the boy has surviving paternal and maternal relatives, although both parents are deceased.

Although the boy’s identity has been discovered, police say they suspect who killed him but don’t know for sure.