A Paris prosecutor has requested a criminal trial for former President Nicolas Sarkozy over suspected illegal overspending on his failed 2012 re-election campaign.

The Paris prosecutor's office said Monday it has asked investigating judges to send Sarkozy and 13 others to court in the case. It's now up to the judges to decide whether Sarkozy must stand trial.

Sarkozy announced his bid for next year's presidential election last month and faces a primary in November against a dozen other conservative candidates.

In February, the judges handed Sarkozy preliminary charges of alleged illegal campaign financing over an invoice system his party and a company named Bygmalion allegedly used to conceal unauthorized overspending.

In a separate case, Sarkozy has been given preliminary charges of corruption and influence-peddling.