Manchester attack: Police hunt 'network' behind bomber
UK authorities have reacted with anger to the publication of the leaked pictures.
One Whitehall source told the BBC there was "disbelief and astonishment" across Whitehall.
A counter terrorism policing spokesperson said it was a breach of trust that undermined relationships with "trusted intelligence, law enforcement and security partners around the world" and undermined the confidence of victims, witnesses and their families.
"This damage is even greater when it involves unauthorised disclosure of potential evidence in the middle of a major counter terrorism investigation," the spokesperson added.