OSLO, Norway — Norway began burying the dead on Friday, a week after an anti-Muslim extremist killed 77 people in a bombing and shooting rampage. Mourners of all ages vowed they would not let the massacre threaten their nation’s openness and democracy.

An 18-year-old Muslim girl was the first victim to be laid to rest since the gunman opened fire at a political youth camp and bombed the government headquarters in Oslo.

After a funeral service in the Nesodden church outside the capital, Bano Rashid, a Kurdish immigrant from Iraq, was buried in a Muslim rite. Sobbing youth accompanied her coffin, which was draped in a Kurdish flag.

The attack will “not destroy Norway’s commitment to democracy, tolerance and fighting racism,” Labor Party youth-wing leader Eskil Pedersen said at a service in Oslo.

Pedersen, who was on the island retreat of Utoya when the right-wing extremist Anders Behring Breivik began his rampage, said: “Long before he stands before a court we can say: he has lost.”

Police raised the death toll to 77, from 76, and said all those killed in the July 22 terror attacks in Oslo and on Utoya have now been identified and those reported missing have been accounted for.

Since the massacre, questions have persisted about whether authorities had underestimated extremist dangers in Norway.