Two Garda officers have been charged with perjury relating to the prosecution of the only man convicted in connection with the 1998 Omagh bomb.
Twenty nine people died in the Real IRA attack
Detectives Liam Donnelly and John Fahy appeared in Dublin District Court.
The charges arise from an investigation following the judgement delivered in the case DPP v Colm Murphy, a Garda statement said.
In 2002 Murphy was jailed for 14 years for conspiring to cause the Real IRA explosion which killed 29 people.