Dozens have gathered to demand that authorities either try or release six Muslim men held at an immigration centre for allegedly being a threat to national security.
The six, who are originally from Tunisia, Syria, Morocco, Afghanistan and Algeria, have lived in Bosnia for decades and have married Bosnian women, but were stripped off their Bosnian citizenship following the September 11 attacks.
Some of them have been at the centre for years.
They refuse to return to their home countries and Bosnia’s law prohibits deportations to the countries where people could face torture.
Protesters on Saturday carried banners saying “We do not want Guantanamo in Bosnia.”
The six hope that the European Human Rights Court in Strasbourg will by the end of this year order Bosnia to release them.