Norwegian Prime Minister Jonas Gahr Store addresses a memorial event marking the 15th anniversary of the July 22, 2011 terror attacks on Utoya Island, Norway, July 22, 2026. [Photo/Xinhua]

OSLO - Norwegian Prime Minister Jonas Gahr Store on Wednesday warned of the growing threat of far-right radicalization among young people, saying social media, artificial intelligence and social isolation were fueling extremism, as the country marked the 15th anniversary of the July 22, 2011 terror attacks.

"Time does not heal all wounds," Store said in a speech on Utoya Island. On July 22, 2011, far-right extremist Anders Behring Breivik carried out Norway's deadliest terrorist attacks, killing 77 people in a bombing in Oslo's Government Quarter and a mass shooting at a summer camp on Utoya Island. The attacks left lasting scars on Norwegian society.

"I believe Norwegian society has underestimated how much the attack has cost the people and the community over these 15 years," he said, adding that the wounds remained deep.

Several people who survived the Utoya attack have since continued working in politics, including ministers and other senior government officials. Store described their continued political engagement as evidence that the determination to shape the future peacefully had prevailed over death and violence.