Neither Sarkozy nor his lead lawyer have commented publicly since the 63-year-old first answered the police summons on Tuesday. Sarkozy has in the past dismissed the allegations as "grotesque" and described them as a "manipulation".

The inquiry began in 2013, after investigative website Mediapart published Takieddine's allegations.

In an interview with Lebanon's L'Orient du Jour newspaper published on Tuesday, Takieddine said he acted as an intermediary between France and Libya during the time that Sarkozy served as interior minister, before his election bid.

Loading

Five months after Sarkozy was elected president, Gaddafi visited him in Paris. It was the eccentric Libyan leader's first state visit to a Western capital in decades, and he pitched a Bedouin-style tent near the Élysée Palace.

Later, Sarkozy became one of the chief advocates of the NATO-led campaign against Gaddafi that resulted in the dictator's overthrow and killing by rebels in 2011.

In France, investigators can interrogate people for up to 48 hours, after which they must release them or notify them that they are being put under formal investigation, which signals serious suspicion but does not automatically lead to trial.

It was not immediately clear when Sarkozy might know his fate, given that his questioners are free to stop the clock for breaks, sleep or longer timeouts between question-and-answer sessions before their 48-hour limit is up.

Sarkozy, once branded a "bling-bling" president, has been dogged for years by political scandals, but none has led to a conviction.

He is not the first French president to be questioned by police after leaving office.

His predecessor, Jacques Chirac, was convicted in 2011, after his retirement, of misusing public funds to keep allies in phantom jobs. He was the first French head of state to be convicted of a crime since Nazi collaborator Marshall Philippe Petain in 1945.

Reuters