A corruption scandal surrounding former French president Nicolas Sarkozy has deepened further with fresh leaks of telephone conversations purporting to show he offered to get a judge a plum job in return for favours.

Sarkozy, who was charged two weeks ago with corruption and influence peddling in a case related to his campaign to win the presidency in 2007, claims he is the victim of a “grotesque” set-up.

He accuses his enemies of using the justice system to undermine a possible political comeback.

But according to extracts from tapped calls published by the French daily Le Monde on Saturday, the ex-president appeared to lobby for a job for the judge in Monaco in return for his help on one of six bribery and funding scandals in which Sarkozy is embroiled.

In intercepted mobile phone calls with his longtime lawyer Thierry Herzog – who also faces charges – Sarkozy is alleged to have said, “I will help him (the judge)… I will get him set up,” adding, “Call him today and tell him I will sort it out. I am going to Monaco and I will see the prince (Albert).”

The conversations are alleged to have taken place in February this year on a mobile phone the 59-year-old politician bought using a false name.

Sarkozy’s lawyer Pierre Haik declined to comment on the new leaks, the latest in a series of damaging revelations to have hit Sarkozy since he left power.

The senior magistrate at the centre of the case, Gilbert Azibert, has been charged with illegally passing on information about the a long-running political funding scandal involving the billionaire L’Oreal heiress, Liliane Bettencourt.

Azibert did not get the position in Monaco, a principality on the Riviera which is largely dependent on France, and has applied to retire.

Under French law it a crime to promise a public position as a favour, whether or not the position is given to the person.