Ontario Provincial Police say no charges will be laid against Mayor Larry O'Brien's ex-wife after an article published in the Ottawa Citizen alleged she was raising money for legal fees on the mayor's behalf.

Police launched an investigation into the matter after allegations against Debbie O'Brien surfaced in March. The investigation has since stopped.

O'Brien is currently awaiting a 2009 spring trial to fight charges that he attempted to influence the city's 2006 mayoral race.

Police spent eight months investigating claims by Terry Kilrea that O'Brien offered him a position on the National Parole Board to leave the race for mayor.

The investigation into the matter was sparked by a complaint from the Ottawa and District Labour Council.

Kilrea alleges he was offered $30,000 to cover his expenses; Kilrea eventually dropped out of the mayor's race, but said he never accepted any money.

O'Brien denies the bribery allegations, along with the claim he discussed a possible appointment for Kilrea with federal Environment Minister John Baird, a Conservative Ottawa MP and the Treasury Board president during the period in question.

The case is scheduled to go to trial April 6, 2009.