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Murder of Mark Kilroy

American murder case

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 22, 2026
Entity authorityQ28853702
Source-derived summary

Mark James Kilroy (March 05, 1968—March 14, 1989) was an American college student who was kidnapped, tortured and murdered by associates of cult leader Adolfo Constanzo as part of a human sacrifice.

Kilroy was kidnapped while vacationing in Matamoros, Tamaulipas, Mexico, during spring break. He was one of at least 14 victims similarly tortured and killed by Costanzo and his followers, who used the victims' remains in rituals for a version of the Palo religion, and who believed human sacrifice granted them immunity from law enforcement for their drug smuggling operations. The killing drew worldwide media attention and initiated an international police manhunt because of the unusual circumstances of the crime.

After the bodies were discovered on April 11, 1989, Constanzo fled to Mexico City but was eventually tracked down. As the police surrounded his apartment complex, Constanzo died after ordering one of the cult members to kill him with a machine gun. Sara Aldrete, another high-ranking member of the cult, was arrested at the scene along with several others. In 1993, several surviving cult members were found guilty of a number of charges, including capital murder and drug trafficking. Several of them, however, claimed they were not guilty of Kilroy's murder and told the press they were tortured to confess. Two suspects still remain at large.

Editorial summary

“Murder of Mark Kilroy” enters the record as american murder case. Crown Archives preserves that source wording while asking what Murder, Mark and Kilroy can confirm, complicate or overturn.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1968, 1989, 1993—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Murder, Mark and Kilroy.
Editorial analysis

Why this record matters

“Murder of Mark Kilroy” is worth following because a concise public description often conceals a longer documentary argument. Here, Murder, Mark and Kilroy provides the most credible route into that argument.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q28853702. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1968, 1989 and 1993.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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The closest primary source, responsible institution and strongest cited specialist reference.

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  1. Establish the record: confirm the title “Murder of Mark Kilroy”, its source revision and the description used here.
  2. Expand the search: follow Murder of Mark Kilroy primary sources, Murder of Mark Kilroy archive and Murder research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from Murder of Mark Kilroy” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.