Former French President Nicolas Sarkozy has been taken into police custody for questioning over allegations that he received campaign funding from the late Libyan leader Col Muammar Gaddafi, BBC reports.
Police are investigating alleged irregularities over the financing of his 2007 presidential campaign.
Police have questioned him previously as part of the probe. Mr Sarkozy has denied any wrongdoing.
The centre-right politician failed to return to power in 2012.
Judicial sources said he was being questioned in Nanterre, a suburb in western Paris.
In 2013 France opened an investigation into allegations that his campaign had benefited from illicit funds from Gaddafi.