Former French President Nicolas Sarkozy was held by police on Tuesday, amid allegations he received illegal funding from former Libyan leader Moammar Gadhafi for his 2007 presidential bid.

Sarkozy was placed in custody by police at a police station northwest of Paris, according to The Associated Press.

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France's interior minister under Sarkozy, Brice Hortefeux, was also questioned by police on Tuesday but was not detained.

The allegations stem from a 2012 report from French investigative outlet Mediapart, which cited a Libyan security service memo saying Gadhafi’s government gave 50 million Euros to Sarkozy.

French Lebanese millionaire arms dealer Ziad Takieddine said in 2016 that he oversaw the handing over of funds to Sarkozy’s chief of staff, Claude Guéant, in 2006 and 2007.

Preliminary charges were filed against Guéant in 2015.

Sarkozy is under scrutiny for other financial dealings as well.

Sarkozy will go on trial for allegedly exceeding spending limits in his 2012 presidential bid, which he lost.

French authorities can detain a suspect for a maximum of 48 hours before deciding if there is ground for a formal probe.