"Right now we're gathering information and intelligence and coordinating with our national and international partners,”security police (Säpo) press spokesman Simon Bynert told the TT news agency.
He added that Säpo is also cooperating with the national police service.
That means we're sharing this information with them to see if they can implement measures that fall under their remit.”
The Swedish Expressen newspaper reported that the country's security service received information from their Iraqi colleagues about an imminent terror threat in the country.
About 7-8 Islamic State terrorists arrived in Sweden to carry out attacks in Stockholm, Expressen sources claimed.
At least 300 Swedish nationals have traveled to Iraq and Syria to join Islamic State (IS, formerly ISIS/ISIL) according to research conducted by the International Center for Counter-Terrorism (ICCT), published on April 1.
In March, Europol said that between 3,000 and 5,000 so-called ‘foreign fighters’ – EU citizens trained in IS terror camps - have returned to Europe and pose a “completely new challenge.”
An April report in the Swedish media said Islamists have successfully infiltrated Sweden’s Green Party. According Lars Nicander from the Swedish National Defense University, there is “a very similar effect today in which people close to the Muslim Brotherhood, an Islamist party, are apparently gaining large footholds in the Green Party.”