Green Man Festival has been urged to axe Kneecap from its line-up by a Conservative politician after footage emerged of the band allegedly calling for MPs to be killed.
Counter-terrorism police are assessing a video of the west Belfast trio from a November 2023 gig appearing to show one person from the band saying: "The only good Tory is a dead Tory. Kill your local MP."
Gareth Davies, Welsh Conservative culture, tourism and sport spokesman, said the festival, held near Crickhowell, Powys, from 14-17 August, "risks further inciteful comments".
Kneecap said they have "faced a co-ordinated smear campaign" while Green Man Festival has been asked to comment.
The Metropolitan Police also said another video, which appeared to show a band member shouting "up Hamas, up Hezbollah" at a performance in London in November, was being assessed.
Both Hamas and Hezbollah are banned in the UK and it is a crime to express support for them.
