(AP) A 16-year-old was arrested after Bulgarian police found explosive devices, an Islamic State group flag and other items in the boy’s home that could have been used in a mass attack, a prosecutor said Saturday.
Police in Bulgaria’s second-biggest city, Plovdiv, conducted a search after the high school student’s relatives reported finding handmade bomb components, Deputy Prosecutor-General Ivan Geshev said.
Officers said they discovered multiple explosive devices, including a pipe bomb and a device filled with 14 kilograms (31 pounds) of nails, as well as the IS flag and Islamist literature.
Geshev said investigators think the case involved only the teen and not an extremist cell or network in Bulgaria.