By the BBC's Alix Kroeger in Sarajevo

Bosnian police have raided the offices of an Islamic charity believed to have links with extremist organisations, including the al-Qaeda terrorist network.

Police seized documents and questioned staff at the Benevolentia International Foundation in Sarajevo and in the central Bosnian town of Zenica.

The raid is part of ongoing efforts to clamp down on Islamic charities which may be channelling funds to al-Qaeda and other extremist organisations.

In January, six naturalised Bosnians were stripped of their citizenship and handed over to the American authorities. Most of them had been working for Islamic humanitarian organisations.

Islamic legacy

The American government has already blocked Benevolentia's assets. Reports by the Bosnian financial police showed that hundreds of thousands of dollars had been withdrawn from the charities' accounts, with no records to show where the money had gone.

There are dozens of Islamic charities in Bosnia - a legacy from the war, when the Islamic world supported the Muslim-dominated Bosnian government.