Ex-French president Nicolas Sarkozy 'arrested over campaign financing'

Former French President Nicolas Sarkozy is in custody over an investigation into campaign funding, sources claim.

He is to be questioned as part of a probe into suspected irregularities over his election campaign financing, according to an official in the French judiciary.

The probe related to alleged Libyan funding for Sarkozy's 2007 campaign, Le Monde newspaper reported.

A lawyer for Sarkozy could not be reached immediately for comment.