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Police overseeing the investigation into Monday night's suicide bombing at an Ariana Grande concert in Manchester have stopped sharing information with American counterparts, BBC News reports, after U.S. officials allegedly leaked information about the attacker and his explosive to the press before British police wanted the information released. The Greater Manchester Police are "furious" at the leaks, BBC News says, and there is "disbelief and astonishment" across the British government at photos of the exploded bomb published in The New York Times.

Home Secretary Amber Rudd said she is "irritated" by the U.S. leaks, Manchester Mayor Andy Burnham said late Wednesday the information leaking "troubles him" and he's "made known my concerns about it to the U.S. ambassador," and in a statement on Wednesday, Britain's National Police Chiefs' Council said such "unauthorized" disclosures undermined this "major counter-terrorism investigation" and breached bonds of trust. Prime Minister Theresa May said, when she arrives in Brussels Thursday, "I will make clear to President Trump that intelligence shared between our security agencies must remain secure."

Britain has arrested nine people in connection with the attack, with eight still in custody, and Libyan authorities detained attacker Salman Abedi's father and younger brother. Manchester Chief Constable Ian Hopkins said Wednesday that "it's very clear that this is a network that we are investigating."

"The police decision to stop sharing information specifically about the Manchester attack with their security counterparts in the U.S. is a hugely significant move and shows how angry British authorities are," says BBC home affairs correspondent Dominic Casciani. "The information from the crime scene wasn't shared on a whim: The British and Americans have a lot of shared world-leading expertise in improvised explosive devices and scientists would be discussing whether the Manchester device tells them something new that could, ultimately, track down a bombmaker." Other British officials said Americans also leaked key information too early after the last major terrorist attack in Britain, back in July 2005.