Norway commemorates 77 victims of bomb and shooting attacks by right-wing fanatic in 2011

Norwegian Prime Minister Erna Solberg takes part in a wreath laying at a memorial ceremony as Norway marked the fourth anniversary of the bombing and the shootings at the Labor Party youth camp on Utoeya island, which killed in total 77 people. (AP)

NATO Secretary General, Jens Stoltenberg, speaks to the press at a memorial ceremony taking place Wednesday, July 22, 2015, near the government building damaged by the bomb attack in Oslo which took place on July 22, 2011. Norway marked the fourth anniversary of the bombing and the shootings at the Labor Party youth camp on Utoeya island, which killed in total 77 people. (Audun Braastad/NTB scanpix via AP) NORWAY OUT (The Associated Press)

Crown Princess Mette-Marit of Norway attends the memorial service for the victims of Anders Behring Breivik taking place in Oslo Cathedral Wednesday, July 22, 2015. Norway marked the fourth anniversary of the bombing of the government buildings in Oslo, and shooting at the Labor Party youth camp on Utoeya island, killing in total 77 people. (Torstein Boe/NTB scanpix via AP) NORWAY OUT (The Associated Press)

Four years after a right-wing extremist killed 77 people in Norway, Prime Minister Erna Solberg says July 22, 2011, will always remain a dark day in the Scandinavian country's history.

At a wreath-laying ceremony outside the new July 22 Center, Solberg said Wednesday the victims will never be forgotten and that "we remember them with love."

Anders Behring Breivik, serving a 21-year prison sentence, confessed to the bomb attack at government headquarters that killed eight people and a shooting rampage at a youth camp on Utoya island off the capital, Oslo, where he murdered 69 others.

Several ceremonies were to be held throughout Wednesday, also attended by NATO Secretary General Jens Stoltenberg who was Norway's prime minister at the time of the attacks.