UK prosecutors Tuesday said they would appeal a court’s decision to drop a charge of supporting terrorism brought against a Northern Irish singer from punk rap group Kneecap for displaying a Hezbollah flag during a concert in November.

“We are appealing the decision to dismiss this case as we believe there is an important point of law which needs to be clarified,” a Crown Prosecution Service spokesperson said, referring to the case against Liam O’Hanna, also known by his stage name Mo Chara.

The case was thrown out by London’s Woolwich Crown Court last month after a judge found there had been a technical error in the way the charge had been brought.

O’Hanna, named Liam Og O Hannaidh in Irish, hailed it as a victory, saying an attempt by detractors to prevent the trio from voicing its support for Palestinians had failed.

The 27-year-old was charged in May when a video emerged from a November concert in London, in which he could be seen draped in a Hezbollah flag. He has denied that he intended to show support for the Lebanese terror group, saying he was in character, preoccupied with his performance and doesn’t “know every proscribed organization.”

Chief magistrate Paul Goldspring found the charge against O’Hanna was not brought by prosecutors within the legal time limit, rendering it “unlawful and null.”

The band, which sings in Irish and regularly leads chants in support of Gaza during performances, has had multiple concerts cancelled internationally over its anti-Israel stance and other controversies.

Canada last month barred Kneecap from entering the country, citing the group’s alleged support for Hezbollah and fellow Iran-backed terror group Hamas. The group also canceled its US tour in August, citing the legal proceedings.

But its performance in Paris went ahead in September despite objections from French Jewish groups and government officials. The group also played the vaunted Glastonbury Festival in southwest England in June.