Andy Burnham is demanding the government push Donald Trump for a full leak inquiry six weeks after devastating pictures of the Manchester bomb attack were leaked by US intelligence agencies.

Mr Burnham, who has kept in touch with the families of those killed in the attack since May 22, said the leak was ‘unforgivably arrogant’ and had caused pain and distress to relatives.

Relatives of Philip Tron, 32, from Gateshead, who lost his life in the attack alongside 21 others, have urged Mr Burnham to push the point with Theresa May - who Donald Trump has already admitted was ‘very angry’ in the days that followed.

The leak resulted in graphic photographs and details of the scene being published by US media, horrifying those who lost loved ones.

Mr Burnham, who is travelling to New York this weekend to meet mayors from around the world, said it was time Mrs May stepped up pressure on the US president.

“Those responsible for leaking highly-sensitive intelligence information and images from the Manchester Arena attack acted in an unforgivably arrogant way and showed utter disregard for everyone affected,” he said.

“I know that the coverage of these leaks in the US media caused serious distress to families who lost loved-ones. That is inexcusable.

“I have spoken to the family of Philip Tron and know they are strongly of the view that the person responsible for leaking these images to the media must be identified and held accountable.

“Not only did their actions add to the pain of the families at a difficult time, they could have compromised the attack investigation. This was a serious breach of trust and cannot be brushed aside.”

It became apparent in the hours following May 22’s attack that the leak had emerged via US intelligence sources at a point when UK agencies were controlling information extremely tightly.

“I am calling on the Prime Minister to raise this issue with the President of the United States and request that a leak inquiry be set up,” he added.

“It is essential that those who did this are identified, punished and that nothing like this ever happens again. The families deserve nothing less.”