Police say 20 suspected of involvement in the 11 suicide bombers held . Arrests were in Italy and across other European countries , police said . Italian police said Tuesday 's arrests were the result of an investigation , started in 2003 , into some Salafi cells which were organized by Tunisians and Algerians . Those arrested are suspected of recruiting bombers to go to Iraq and Afghanistan . Eleven people were held in Italy and nine others across Europe .
Police say 20 suspected of involvement in the 11 suicide bombers held . Arrests were in Italy and across other European countries , police said . Those arrested are suspected of recruiting bombers to go to Iraq and Afghanistan . Eleven people were held in Italy and nine others across Europe .