Cieneguillas prison riots
Prison riots

Two prison riots occurred at the Cieneguillas Regional Center for Social Reintegration in Cieneguillas, Zacatecas, Mexico. The first was on 31 December 2019, and the second on 2 January 2020. Sixteen inmates were killed on 31 December, and another inmate was killed on 2 January.
Background
The Cieneguillas prison is a medium-security center. During the 2010s, inmates linked with various cartels, including Los Zetas, the Gulf Cartel, and the Sinaloa Cartel, were added to the prison. The prison became dangerous and failed several assessments due to the introduction of the cartel inmates, with the last assessment before the riots deeming it to have a lack of governance and an undermined security. The prison is sectioned so that members of different organizations, and those unaffiliated, are separated. However, when reporters from El Universal visited in 2019, authorities reported a lack of infrastructure to operate the prison optimally.
In 2009, the prison was the location of a high-profile escape that freed 53 inmates; a state official, speaking in 2019, said that steps had been taken to improve security after that event. There was also a plan to cause a riot on New Year's Eve in 2018, to allow another escape, but this was uncovered and prevented.
This brief starts where responsible research should: with the source description of “Cieneguillas prison riots” as prison riots. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as prison riots. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 8, 2026. The linked authority identifier is Q81476627. Authority coordinates are 22.763, -102.671. None of the 1 selected statements returned an explicit reference. The first chronological checks are 2019, 2020, 2009 and 2018.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. 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.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Cieneguillas prison riots”, its source revision and the description used here.
- Expand the search: follow Cieneguillas prison riots primary sources, Cieneguillas prison riots archive and Cieneguillas research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Cieneguillas prison riots”?
- Which cited source is closest to the event, object or claim?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “Cieneguillas prison riots” 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.