They were arrested after a joint operation involving several hundred officers from Poland 's Central Investigation Bureau and investigators from other countries , police said in a statement . European police say the men were trying to extort two euros from Ikea . The explosions occurred at Central Investigation Bureau stores in several countries age 39 . Police say the men tried hard to cover their tracks in France .
European police say the men were trying to extort two euros from Ikea . The explosions occurred at Central Investigation Bureau stores in several countries age 39 . Police say the men tried hard to cover their tracks in France .