German prosecutors said Thursday they have issued a formal arrest warrant for a 17-year-old Iraqi citizen who was allegedly planning to commit an extremist attack in either Germany or Britain. The Federal prosecutors said that Deday A., who was already detained on Feb. 13 by local authorities in Frankfurt, is accused of having stored a large quantity of firecrackers in his apartment in the state of Hesse to use them to build a bomb. They said in the statement that the suspect is also accused of membership in ISIS extremist organization. They did not release any further details and didnt give his last name in line with German privacy rules. The country remains on high alert after a militant attack on a Christmas market in Berlin in December 2016 which killed 12 people. Dozens of suspects have been arrested or charged over alleged terror plots.