Between “20 and 25” people were killed when a gunman opened fire at random at a youth camp near Oslo on Friday, an eyewitness has told Norway’s state NRK TV channel.
Andre Scheie said he saw the bodies on the shore of the Labor Party youth camp on the island of Utoya.
"There are very many dead by the shore ... there are about 20-25 dead," he said. He also spoke of people dead in the water.
Police said later "at least nine" people had died.
NRK said the shooter has been detained. It also said witnesses described him as looking "Norwegian".
The shooting came just hours after a massive bomb went off at the government headquarters in Oslo. At least seven people died in the blast.
A suspected car bomb exploded near the office of Prime Minister Jens Stoltenberg. The premier is unharmed.
No one has yet claimed responsibility for the bombing or the shooting. Police say the two attacks are linked.