“Of course, the incident influences us in Stockholm,” police spokesman Stefan Färdigs told TT.

“We are taking action along with the security police, but I can’t say what that will be.”

However, despite the massive bomb attack in neighbouring Norway – which has claimed several lives and injured many more – the terror threat level in Sweden has not been raised.

“We have not seen any reason to increase it,” said security police (Säpo) press officer Sirpa Franzén to Aftonbladet.

“We are in contact with our partners, the security police in Norway, and we’re receiving information from other sources too,” she added.

The explosion apparently struck at the heart of Norway’s administration, turning the streets around the government quarter into ‘a warzone’. Large parts of the centre of Oslo were evacuated following the blast.

Sweden’s embassy in Oslo is around three kilometres from the site of the explosion and was undamaged in the explosion.

Speaking to Svenska Dagbladet, a Swedish diplomat in Oslo who was on duty at the time of the blast, Olof Hultdgren, said that there has been little contact so far from Swedes in the city.

“But there are a great many Swedes who live and work here, especially during the summer,” he said.