A UN Panel Says Peru Jailed Castillo Unlawfully. It Was Split
Politics
Key Facts
—The finding. The United Nations Working Group on Arbitrary Detention concluded that Peru’s detention of former president Pedro Castillo was arbitrary and lacked legal basis.
—The remedy sought. Immediate release, compensation, an independent investigation, and measures against those responsible for the violations.
—The panel was divided. Two members dissented outright. Ukrainian lawyer Ganna Yudkivska and Korean jurist Ethan Hee-Seok Shin held that the detention was not arbitrary.
—The timing. Opinion 78/2025 was adopted on 14 November 2025 and dated 4 June 2026. It surfaced only on 9 July, via the Peruvian outlet El Foco.
—The status. Castillo is serving 11 years, 5 months, and 15 days at Barbadillo prison for conspiracy to rebel after his failed self-coup of 7 December 2022.
—The force. The group’s opinions are not court judgments. Peru has ratified the underlying treaty, which is why lawyers argue they carry obligation.
A United Nations panel has ruled that Peru’s Castillo detention was arbitrary. It says the imprisoned former president should be freed and compensated. What almost every account has left out is that the panel could not agree.
Pedro Castillo, a rural schoolteacher who won the presidency in 2021, tried to dissolve Congress on 7 December 2022. He was removed within hours, arrested by his own security detail, and is now serving eleven years and four months.
The Working Group on Arbitrary Detention sits under the United Nations Human Rights Council. It is a panel of independent legal experts, not a court, and it issues opinions rather than binding judgments.
What the panel said about the Castillo detention
Its central objection is procedural. Castillo was arrested without any legal basis, the group found, and without a warrant from a judge. He was not told the grounds, and his presidential immunity was not lifted first.
Peruvian law contains no doctrine of flagrant offence that applies to a sitting head of state, the experts wrote. Before he could be detained, a process to strip that immunity had to be opened.
The mechanics matter here. The officer guarding Castillo said he got a call from the state security director, the opinion notes, telling him to detain the president for offences supposedly in plain sight.
The opinion cites the Universal Declaration of Human Rights and the International Covenant on Civil and Political Rights. These cover liberty, freedom from arbitrary arrest, an independent tribunal and the presumption of innocence. It also holds that Peru’s public prosecution service is not an independent judicial authority.
The proposed remedy is unambiguous. Release Castillo at once, grant him a real right to compensation and reparation, investigate the circumstances fully, and act against those responsible.
The opinion adds further criticisms. It says no less severe alternative to arrest was considered, that Castillo lacked prompt access to a lawyer of his choosing, and that his defence came under pressure.
The experts also describe a media campaign that presented him as guilty of rebellion, without evidence that he had raised arms. They argue this produced intense political pressure that could affect judicial independence.
One passage examines whether Castillo faced discrimination over his peasant origins and social status. He was a village schoolteacher and union leader before he won the presidency, and that story has shaped how both sides read the case.
Was the ruling on the Castillo detention unanimous?
No, and this is the part the wire coverage buried. Two members of the panel, the Ukrainian lawyer Ganna Yudkivska and the Korean jurist Ethan Hee-Seok Shin, held that the detention was not arbitrary at all.
Their reasoning is that Castillo’s address to the nation was an exercise of power. It was not an act of expression or political participation. On that reading, the protections the majority invoked simply do not apply.
The panel’s own president-rapporteur, the New Zealander Matthew Gillett, did not file a partial dissent; instead, Ukrainian lawyer Ganna Yudkivska and Korean jurist Ethan Hee-Seok Shin held that the detention was not arbitrary.
Two members rejected the finding outright and a third accepted only part of it. That is a weaker instrument than a unanimous opinion, yet it remains the majority view of a United Nations body.
Why this lands now
The document is Opinion 78 of 2025. It was adopted at the group’s session in November 2025 and carries a date of 4 June this year. It became public only on 9 July, when the investigative outlet El Foco published it.
Nearly eight months separate the decision from its disclosure. It arrives while Peru’s interim president, José María Balcázar, has publicly mused about a pardon that the executive has rejected on at least six previous occasions.
It also arrives days before a change of government. The next Peruvian presidential inauguration is scheduled for 28 July 2026 for the winner of the 2026 election, but as of the publication date, no candidate has been officially inaugurated, and current president is Dina Boluarte (inaugurated 2022). Our reporting has shown that the Peruvian political establishment has repeatedly closed ranks against Castillo, and critics argue the timing of the opinion’s release—nearly eight months after adoption—raises questions about whether political pressure delayed its disclosure.
The opinion was one of a batch covering cases in a dozen other countries, among them Saudi Arabia, Pakistan, China and Venezuela. That context is worth holding in view, because the group’s docket is not a comment on Peru alone.
Does Peru have to obey?
Not in the sense that a court order compels a government. The group’s own text merely recalls that the Human Rights Council has urged states to take its opinions into account and report back on their actions.
Peruvian human-rights lawyers argue the obligation is real, because Peru ratified the covenant under which such bodies operate. Others will read the split panel as reason to give the finding less weight, and the government has so far said nothing.
Why should investors care about a prisoner?
Because it is a rule-of-law signal in a country that has had nine presidents since 2018. An international body has now questioned whether Peru’s institutions followed their own constitution during its most consequential political rupture.
That does not change the mining code or the fiscal accounts. It does sharpen the question of institutional predictability that sits underneath every long-dated investment in the country.
Frequently Asked Questions
Does Peru have to release Castillo because of this UN ruling?
No — the UN panel's opinion is not a court judgment and cannot legally force Peru to do anything. Peruvian human-rights lawyers argue the obligation is real because Peru ratified the treaty behind the ruling, but the government has so far said nothing.
Was the UN panel unanimous in calling Castillo's detention arbitrary?
No — two members said the detention was not arbitrary at all. The panel's own president-rapporteur only partly agreed, finding just the pre-trial custody unjustified. That makes it a majority opinion, not a unanimous one.
When did this UN ruling become public, and why did it take so long?
The opinion was adopted on 14 November 2025 and dated 4 June 2026. It only became public on 9 July 2026, when the Peruvian outlet El Foco published it — nearly eight months after it was adopted.
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