Counter terror police are assessing a video reported to be from a concert by Irish-language rappers Kneecap.
A social media clip of the hip hop trio on stage appeared to show one member of the group shout "up Hamas, up Hezbollah".
The footage was posted online by Danny Morris from the Jewish security charity, the Community Security Trust.
He said it was from a gig last November at London's Kentish Town Forum.
A Metropolitan Police spokesperson said: "We have been made aware of the video and it has been referred to the counter terrorism internet referral unit for assessment and to determine whether any further police investigation may be required."
Hamas and Hezbollah are both proscribed as terrorist groups in the UK. Under Section 12 of the Terrorism Act 2000, it is an offence to express "an opinion or belief that is supportive of a proscribed organisation".
Sky News has contacted Kneecap's management for comment.
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It comes after TV personality Sharon Osbourne called for Kneecap's US work visas to be revoked after accusing them of making "aggressive political statements" including "projections of anti-Israel messages and hate speech" at Coachella Music and Arts Festival.
Speaking to Rolling Stone, Kneecap member Mo Chara said in response: "Her rant has so many holes in it that it hardly warrants a reply, but she should listen to War Pigs that was written by Black Sabbath (led by Ozzy Osbourne, her husband)."
He also told the outlet: "We believe we have an obligation to use our platform when we can to raise the issue of Palestine, and it was important for us to speak out at Coachella as the USA is the main funder and supplier of weapons to Israel as they commit genocide in Gaza."
In November last year, Kneecap won a discrimination case against the UK government after former business secretary Kemi Badenoch refused them funding.
(c) Sky News 2025: Counter terror police assessing Kneecap concert video
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