Authorities in Sarajevo said Tuesday that four suspected Bosnian jihadists were in custody following their arrest and the seizure of a cache of weapons along with an Islamic State flag.
One of the four, 22-year-old Senad Kostac, was detained in Turkey on the road to Syria and handed over to Bosnian authorities, said a prosecutor's statement.
The other three, aged 26, 27 and 55, were arrested in Kostac's village of Velika Kladusa in northwestern Bosnia, accused of "trying to join a foreign paramilitary unit."