Regulator initially declined to investigate but now says it is looking into repeat broadcast from day after first showing

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Ofcom is to investigate whether GB News breached broadcasting rules with a second showing of its interview with Donald Trump after complaints that the US president’s claims about climate change, Islam and immigration had gone unchallenged.

A series of complaints were made over the interview, which the presenter Bev Turner conducted last November.

The media regulator had previously announced it would not open an investigation into the original broadcast of the interview on the rightwing network’s US-based programme Late Show Live.