Šef Europola Rob Wainwright rekao je da je ta ideja proizašla nakon eksplozije bombe u petak u sjedištu vlade u Oslu, i nakon pucnjave samo dva sata kasnije u omladinskom kampu Laburističke stranke na oko 50 km udaljenom ostrvu Utoeya.
Europol head Rob Wainwright suggested the idea was prompted by Friday's bomb explosion at the government headquarters in Oslo and the killing spree at a Labour Party summer youth camp on Utoeya Island, about 50km away, just two hours later.