MILAN, Italy, June 4 (UPI) -- Arrest warrants for five suspects from North Africa were issued Friday in Italy for allegedly plotting terrorist attacks in Italy, France, Spain and Denmark.
Nicola Piacente, a Milan prosecutor, said the African suspects were allegedly plotting attacks on the San Petronio cathedral in Bologna, Italy and the subway system in Milan along with unknown targets in France, Spain and Denmark.
According to a news release from Adnkronos, Italy's paramilitary police were conducting an investigation into the suspects and had identified a "serious threat."
Officials say one of the suspects from Tunisia was picked up in Caltanissetta, Sicily, and three others in the group -- an Algerian, a Moroccan and another Tunisian -- are already in jail.
Police authorities say the fifth suspect in the alleged terrorism plot, another Moroccan individual, is still at large.
