Italian police say they have arrested three Algerian nationals in Naples and Brescia on suspicion of being “potentially operative terrorists ready to carry out an attack.”Police say the men were detained in a joint operation with Italy’s military secret services, after they came into contact with an Algerian Salafist cell. Algeria’s Salafist movement is thought to have links with al-Qeada. The three men have been identified and now go before a judge who decides if the police have grounds to keep them in custody. Media reports claim at least one of the suspects has spent time in training camps in Afghanistan and Chechnya. Italy is a key US ally in Iraq and has regularly been threatened with attack by Islamic militants.