Paris: Investigators searched the lower chamber of the French Parliament as part of a probe into allegations that the wife of French presidential candidate Francois Fillon earned money in a fake job.

At least one reporter at the scene witnessed agents belonging to France’s anti-corruption agency, who on Monday questioned centre-right candidate Fillon and his Welsh wife Penelope, enter the National Assembly — France’s lower house of Parliament, Efe news reported.

Fillon has denied the allegations — published by satirical weekly “Le Canard EnchainĂ©” — that his wife earned 500,000 euros ($535,050) of public funds as a parliamentary adviser, despite not actually doing the job.

While he said the accusations were part of a smear campaign, the investigators reportedly searched Fillon’s own office.

Fillon was widely regarded as a favourite in the upcoming French presidential elections where he is to run against far-right National Front candidate Marine Le Pen, Socialist Party candidate Benoit Hamon and the centrist Emmanuel Macron.