While authorities in the United Kingdom attempted to control the release of information about Monday’s deadly terrorist attack in Manchester, U.S. officials privy to the investigation passed along closely guarded details to the media.

Hours before U.K. authorities divulged such facts as to the nature of the suicide bombing after an Ariana Grande concert at the Manchester Arena, media outlets citing unnamed U.S. officials briefed on the incident had already revealed them. The leaks continued into Tuesday, even after the Manchester police chief asked people not to speculate or share information that doesn’t come from official sources.

British Home Secretary Amber Rudd told BBC Radio 4 that she was upset that U.S. officials appeared to have leaked details to the press, and indicated that she would reconsider sharing similar information going forward.

“The British police have been very clear they want to control the flow of information in order to protect operational integrity, the element of surprise,” she said. “So it is irritating if it gets released from other sources and I have been very clear with our friends that that should not happen again.”

By Wednesday afternoon, other politicians were echoing that frustration.

“The idea that the U.S. authorities could leak information they have been given without authorization right in the middle of a live investigation where public safety is at risk is extremely concerning,” Yvette Cooper, who chairs the parliamentary home affairs committee, told HuffPost U.K.

“The U.S. needs to tackle this immediately for the sake of our joint security or it will prevent vital security cooperation in future.”

V troubled by US leaking intelligence UK has given them in middle of live investigation where public safety at risk. What is going on? — Yvette Cooper (@YvetteCooperMP) May 24, 2017

British authorities joined a growing chorus of disapproval late Wednesday:

Very strong statement from UK police chiefs condemning "damaging" US leaks they say undermine a major ongoing counter-terror investigation pic.twitter.com/a1koH59LcA — Josh Halliday (@JoshHalliday) May 24, 2017

The comments back up earlier speculation from a Belgian counterterrorism expert, who told BuzzFeed News that he suspects U.K. authorities are “livid” at U.S. officials for divulging confidential information.

“It happens sometimes when a larger partner like America assists on an investigation like this one,” the official, who asked not to be identified because he lacks permission to speak with the press, told BuzzFeed. “You know you are trading the additional resources they bring for a chance of increased leaks. In this case, I suspect the Brits are livid — I know we would be — to have a suspect ID’d before they’re ready, and obviously the recent performance of the Trump administration on leaking sensitive information can’t be far from anyone’s mind if they examine” the situation.

The first of the unofficial details emerged shortly after 1 a.m. Manchester time on Tuesday, when several media outlets, including NBC, Reuters and CNN, reported that U.S. officials said the attack was carried out by a suicide bomber:

BREAKING: US officials briefed on Manchester incident say UK officials suspect it was caused by suicide bomber -NBChttps://t.co/uonEQa0DuC — CNBC (@CNBC) May 23, 2017

BREAKING: Suicide bomber suspected in Manchester Arena explosion - two U.S. officials. https://t.co/7Rdgkqnmb6 pic.twitter.com/E0kb362wIb — Reuters Top News (@Reuters) May 23, 2017

Police looking into possibility a suicide bomber carried out deadly attack at Ariana Grande concert, officials say. https://t.co/GXJnjb5FTb pic.twitter.com/CaseVErfEQ — CNN Breaking News (@cnnbrk) May 23, 2017

At the time, Greater Manchester Police were only releasing a brief statement that outlined casualties, and said the explosion was “being treated as a terrorist incident.”

Latest statement on incident at Manchester Arena pic.twitter.com/BEpLOan3dY — G M Police (@gmpolice) May 23, 2017

Six hours later, police released a statement from Chief Constable Ian Hopkins confirming that the attacker died at the scene and was believed to be carrying an “improvised explosive device which he detonated causing this atrocity.”

Latest statement on incident at Manchester Arena @CCIanHopkins pic.twitter.com/LDG1wgX2sT — G M Police (@gmpolice) May 23, 2017

In that statement, Hopkins stressed the importance of letting his department release information when investigators deemed it safe to do so.

“We would ask people not to speculate on his details or to share names,” he said. “There is a complex and wide ranging investigation underway.”

But U.S. officials anonymously continued to bypass U.K. authorities. They shared the name of the suspect, 22-year-old Salman Ramadan Abedi, with Reuters, The Associated Press and other outlets, which published it shortly after 4 p.m. Manchester time on Tuesday.

The name was soon everywhere, forcing U.K. authorities to release the bomber’s identity sooner than they planned, The Guardian reported.

Greater Manchester Police released the name about an hour after the AP report came out.

Latest statement from @ccianhopkins in relation to last night's attack. pic.twitter.com/w1BdLp9nY4 — G M Police (@gmpolice) May 23, 2017

The leaks follow revelations that U.S. President Donald Trump disclosed “highly classified information” from Israel during a meeting with Russian officials earlier this month, directing extra attention to how the U.S. handles sensitive intelligence information.

Israeli Defense Minister Avigdor Lieberman confirmed the breach in a radio interview on Wednesday and said he discussed the matter with his U.S. counterparts, though he was careful with his words.

“I can confirm that we did a spot repair and that there’s unprecedented intelligence cooperation with the United States,” he said.

“What we had to clarify with our friends in the United States, we did. We did our checks.”

This article has been updated with new details, including comment from Rudd and Lieberman.

Graeme Demianyk and Alana Horowitz Satlin contributed reporting.