Freya the walrus euthanised in Oslo due to fears for human safety

Freya the walrus sits on a boat in Frognerkilen in Oslo (Tor Erik Schroder/NTB Scanpix via AP)

A walrus that has attracted crowds of people in Oslo has been put down by Norwegian authorities due to fears it posed a risk to humans.

The 600kg female, known affectionately as Freya, became a popular attraction in Norway in recent weeks despite warnings from officials that people should refrain from getting close and posing for pictures with the massive marine mammal.