Shooting at a mosque in Norway is being investigated as a possible act of terrorism.
The police confirmed their line of investigation during a media briefing on Sunday.
The gunman, who had injured one after opening fire at the Al-Noor Islamic Centre on the outskirts of the capital Oslo, has been taken into custody.
Later, police confirmed that the suspect's relative was killed at his house before the mosque attack.
The suspect described as a "Norwegian man" had been known to police before the incident but could not be described as someone with a "criminal background".

Pakistan steps up diplomatic bid to get US-Iran peace talks on track
Philippines vows to arrest fugitive senator wanted by ICC
UN condemns Israeli decision to establish military facilities in East Jerusalem
Canada PM Carney says Israel's treatment of Gaza flotilla members is 'abominable'
Tankers exit Hormuz as Trump, Vance talk up Iran deal prospects