The Norwegian Police Security Service (PST) raised the alarm, releasing an international warning through Interpol via a so-called orange notice. PST have also requested help from their Swedish colleagues but say they do not know where or how an eventual terrorist attack would take place.
Swedish police were asked to help by spreading information about the potential threat to police on duty so they can be prepared to take emergency measures if the woman shows up in Sweden. Norwegian criminal suspects have on several occastions left Norway by crossing the border to western Sweden.
"An orange notice is a warning about a potential threat to public safety and security. It is a warning about a person, event or a hidden weapon," Rachel Billington, head of communications at Interpol, told GT.