One person has been arrested after a shooting at a mosque in a western suburb of the Norwegian capital Oslo.

The Oslo Police Department said one person was shot during the incident on Saturday afternoon in Baerum, suffering light injuries.

It said a suspect is in custody and no-one else is thought to have been involved.

Local newspaper Budstikka quoted a mosque board member, Irfan Mushtaq, as saying the gunman wore a helmet and a uniform.