Tears in Oslo after two dead and 21 injured in nightclub 'terror' shooting

The royal family of Norway joined grieving citizens in Oslo tonight to pay their respects to two men killed in a shooting at a nightclub now being investigated as a 'terror act'. Crown Princess Mette-Marit and Crown Prince Haakon joined hundreds of mourners at an impromptu memorial.

People were pictured arm in arm comforting each other in central Oslo. A gunman opened fire in the city's nightlife district early on Saturday, killing two people and leaving more than 20 wounded in what the Norwegian security service called an 'Islamist terror act' during the capital's annual LGBTQ Pride festival, which was cancelled as a result.

Investigators said the suspect, identified as a 42-year-old Norwegian citizen originally from Iran, was arrested after opening fire at three locations in central Oslo.

Police said two men, one in his 50s and the other in his 60s, died in the shootings. Ten people were treated for serious injuries, but none of them was believed to be in life-threatening condition. Eleven others had minor injuries.

The Norwegian Police Security Service raised its terror alert level from 'moderate' to 'extraordinary' – the highest level – after the attack, which sent panicked revellers fleeing into the streets or trying to hide from the gunman.

The service's acting chief Roger Berg called the attack an 'extreme Islamist terror act' and said the suspect had a 'long history of violence and threats', as well as mental health issues. He said the agency, known by its Norwegian acronym PST, first became aware of the suspect in 2015 and later grew concerned he had become radicalised and was part of an unspecified Islamist network.

Norwegian media named the suspect as Zaniar Matapour, an Oslo resident who arrived in Norway