Bulgarian prosecutors on Tuesday charged three Syrians, who have already been granted refugee status in Germany, with attempting to join the Islamic State militia, state news agency BTA reported.
The men, aged 20, 22 and 25, were arrested in February, after arriving from Greece allegedly intending to cross to Turkey and continue toward Syria.
Prosecutors built their case on photographs of Islamic State guerrillas found on one of the defendants' phones. The Syrians, who face up to 10 years in prison if convicted, said that they had wanted to see their relatives in Turkey.
According to the report, Germany had recognized the men as refugees before they returned to Greece and then, after failing to cross to Turkey, attempted to return through Bulgaria.