Ottawa Mayor Larry O'Brien will get a bit of a break before the start of his criminal trial on influence-peddling charges.

Ontario Provincial Police sources told CBC News that O'Brien's trial, which was set to begin April 27, will now be delayed until May 4.

O'Brien is facing two separate charges after a police investigation into allegations that he had offered to use his influence in the 2006 municipal election to secure a federal appointment for a political rival.

In a sworn affidavit, O'Brien's rival in the mayoral race, Terry Kilrea, alleged that O'Brien had offered him $30,000 to cover his campaign expenses as well as a job on the National Parole Board if he left the race.

Investigators allege that the offences took place between July 10 and Aug. 8, while both Kilrea and O'Brien were running on right-of-centre platforms in the 2006 election.

The trial date has been moved because the judge had a scheduling conflict, CBC has learned.