Bosnia steps up security

The Bosnian interior ministry has said two men have been arrested in Sarajevo, as part of an operation to increase security measures in the wake of the attacks on the United States.

The move follows the indefinite closure of the American and British embassies in the city, because of what diplomats have described as credible security threats.

The World Bank has also closed its office in the Bosnian capital.

The ministry refused to specify the exact reason for the arrests, but international diplomats have indicated to reporters in the city that they were suspected by the US of having links to terrorism.

From the newsroom of the BBC World Service