A member of the Northern Irish rap trio Kneecap has been charged with a terrorism offense after allegedly waving a Hezbollah flag at a concert. The musicians say they'll 'vehemently defend ourselves.'

A member of Irish hip hop trio Kneecap has been charged with a terrorism offence following an investigation by London’s Metropolitan Police.

Liam Óg Ó hAnnaidh, 27, who goes by the stage name Mo Chara, was charged May 21 with a terrorism offense, according to a release from the U.K.'s Metropolitan Police.