The BBC has been criticised by the media regulator Ofcom for airing an interview on Radio 1 with a British Isis militant who said fighting was “fun” and compared it to the Call of Duty video game.

Kabir Ahmed is believed to have become the second British jihadi to have killed himself while fighting in Iraq and Syria in a suicide bomb attack last Friday.

The interview was broadcast on the lunchtime edition of Radio 1’s news programme Newsbeat on 13 June this year, while he was still going under the name Abu Sumayyah. The 32-year-old was introduced as “a man who left England to fight for the radical Isis group”.

Sumayyah said: “It’s actually quite fun, better than, what’s that game called, Call of Duty? It’s like that, but really, you know, 3D. You can see everything’s happening in front of you, know. It’s real, you know what I mean?”

Ofcom said the interview should not have been aired in the way it was broadcast and had “clear potential for causing offence”.

Sumayyah described his membership of Isis as “freedom, totally freedom … the good life, actually quite fun” and talked positively about the fact he would “walk around with a Kalashnikov [automatc rifle] if I want to; with an RPG [rocket-propelled grenade], if I want to”.

The regulator said the interview, which was not conducted by the BBC but taken from a podcast, should have been given more context and warnings about its content, especially at a time when many under-18s may have been listening.

It said the issues around the broadcast were exacerbated because it followed immediately on from a light-hearted item about the football World Cup in Brazil.

The broadcast was also criticised by the BBC Trust, which said it was a “serious breach” of rules on impartiality and harm and offence.

The trust’s editorial complaints unit said the programme should have done more to challenge the views about Isis and its portrayal as “actually quite fun”.

In its ruling, also published on Monday, the trust said the BBC had a “particular responsibility to protect children” with its editorial guidelines “specifically warning of the risks of glamorising violence”.

It was not possible for BBC journalists to directly challenge Sumayyah because the comments were lifted from a video interview on the Isis show podcast, posted online four days earlier.

BBC management admitted more details should have been given about the interview and how it was obtained, and more information about Isis and the reality of life in Syria, as well as a warning about its potentially offensive content.

A new sign-off system has since been introduced on the programme for both on-air and online reports, where parts of the interview were also published.

A BBC spokeswoman said: “Newsbeat accepts the findings of the Ofcom and BBC Trust report - appropriate measures have already been introduced to prevent similar breaches in the future.”

Ofcom said the Call of Duty comparison was “particularly unsuitable for children” because Isis had referred to the game on social media in its recruitment campaign aimed at young people.

The regulator took action following one complaint from a listener who said the interview had “glorified terrorism by likening killing innocent people to playing” a computer game.

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