Ivor Callely has been released on bail after being formally charged with fraud offences.
The former Junior Minister with an address at St. Lawrence's Road in Clontarf in Dublin is accused of making bogus claims for mobile phone expenses while a member of the Oireachtas.
If convicted the former Fianna Fail TD faces a maximum jail sentence of 10 years.
98FM Crime Correspondent Louise Byrne says the charges date back to the time when the 54-year-old was a member of the Oireachtas.
"He's facing charges of producing fictitious invoices to claim expenses for mobile phone handsets and accessories on dates in 2007, 2008 and in 2009" she said.
"Essentially, this was a vouched expenses system in the Houses of the Oireachtas; and Ivor Callely is accused of using bogus invoices from mobile phone companies to make claims" she added.