Joseph Augustus Zarelli
A young boy's battered, naked body was found in a cardboard box in Fox Chase, Philadelphia. Known for decades as 'America's Unknown Child,' he was finally identified in 2022 as Joseph Augustus Zarelli through DNA genealogy. His killer has never been identified.
- Status
- Unsolved
- Type
- Homicide
- Date
- February 25, 1957
- Location
- Philadelphia, Pennsylvania
- Age
- 4
- Gender
- Male
- Decade
- 1950s
- OpenUnsolved
- Partly resolved
- Charges or trial
- Closed
No one has been charged and the case remains open.
Case background and investigation
On February 25, 1957, a young college student discovered the nude, battered body of a small boy wrapped in a plaid flannel blanket inside a large cardboard box in a wooded area of Fox Chase, northeast Philadelphia. The child, estimated to be between four and six years old, had been severely beaten, and his body showed signs of long-term malnourishment. His hair appeared to have been recently and crudely cut, with clippings still clinging to his skin. Despite an enormous investigation, no one came forward to identify him.
The Philadelphia Police Department launched one of the largest investigations in the city's history. Officers distributed flyers across the region showing a photograph of the boy, posed as if sleeping to appear less disturbing, but no leads materialized. The JCPenney box he was found in was traced to a nearby store, but that lead also went cold. The boy was buried in a potter's field in 1957 and later moved to a named grave in Ivy Hill Cemetery in 1998, marked 'America's Unknown Child.'
For over six decades, the case haunted investigators and the public alike. Multiple theories emerged, including that the boy had been a foster child or had been sold by his birth parents, but none could be confirmed. Advances in forensic genealogy finally led to a breakthrough in 2019 when DNA was extracted from the boy's remains after he was exhumed.
In December 2022, the Philadelphia Police Department announced that the boy had been identified as Joseph Augustus Zarelli through investigative genetic genealogy. Born on January 13, 1953, he was the son of a Philadelphia-area family. Despite the identification, his killer has never been charged, and the circumstances of his death remain under investigation, making it one of the longest-running open homicide cases in American history.
Timeline
-
January 13, 1953Joseph Augustus Zarelli is born in the Philadelphia area.
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February 25, 1957A boy's body is found in a cardboard box in Fox Chase, Philadelphia.
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March 1, 1957Police distribute thousands of flyers but no one claims the child.
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November 11, 1998The boy is exhumed and reburied in a named grave at Ivy Hill Cemetery.
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January 1, 2019DNA is extracted from exhumed remains for genetic genealogy.
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December 8, 2022Philadelphia police identify the boy as Joseph Augustus Zarelli.
Sources
References used for this entry. ColdCaseIndex is an index of public information. To report an error, email info@coldcaseindex.com.
- Boy in the Box (Philadelphia) - Wikipedia
- America's Unknown Child identified after 65 years - NBC News
- CBS News Philadelphia - Police reveal identity of 'The Boy in the Box': Joseph Augustus Zarelli
- PhillyVoice - Philly's cold-case homicide victim, the 'Boy in the Box,' identified as Joseph Augustus Zarelli, police say
- NBC10 Philadelphia - After 65 Years, Philadelphia Police Identify 'Boy in the Box'
- The Philadelphia Inquirer - Joseph Augustus Zarelli, 'the Boy in the Box,' gets a new headstone with his name
- Wikipedia - Killing of Joseph Augustus Zarelli
Have information about this case?
Cold cases are solved when someone comes forward. Even a detail that seems minor can matter. Contact law enforcement through one of these channels:
- FBI Tips (tips.fbi.gov): submit a tip online to the Federal Bureau of Investigation
- FBI tip line: 1-800-CALL-FBI (1-800-225-5324)
- The police force or sheriff's office responsible for Philadelphia
Tips can usually be given anonymously. ColdCaseIndex does not collect tips. To report an error on this page, email info@coldcaseindex.com.
Entry last updated September 29, 2026.
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