The Norwegian Nature Inspectorate (SNO) confirmed the presence of wolves in the area after examining the carcasses of three of the dead lambs.
“Everything indicates that they are Swedish wolves whose home territory is on the Swedish side of the border,” Ole Knut Steinseth from the SNO told Norway's VG newspaper.
“There should be no breeding wolves west of Glomma. If wolves begin to establish themselves, they should be removed. It's a political decision.”
The County Governor of Oppland issued a hunting license in consultation with the County Governor of Buskerud, making it legal to hunt wolves in the area from next Thursday until Monday.
The governor of Oppland County and the County governor in Buskerud have issued a license to hunt the wolves lasting from 9pm this coming Thursday over the weekend until noon on Monday.
Carl Otto Løvenskiold, the businessman and landowner who holds a large estate in the Nordmarka, said that he hoped the wolf could be found and shot rapidly.
“We are very concerned that we've got wolves in Northmarka and that it has been discovered killing and eating animals,” he said. “Elk calves and fawns are easy pickings for wolves.”
A wolf family that established itself in Ostmarka, another forest recreation area outside of Oslo, has been left untouched.