Six men and two women were still being questioned by gardai last night and four men were being questioned by the RUC about the Omagh bombing.
Three men were brought to a special court sitting in Carrickmacross, Co Monaghan, to have their detention extended for a further 24 hours, under the legislation introduced last year in the wake of the atrocity carried out on August 15th by dissident republicans from the Border area. Twenty-nine people died and some 300 were injured.
The people being questioned by gardai were all arrested in the Dundalk area over the past three days. They include a husband and wife from Dundalk. One man was released yesterday and two were arrested.
It is understood they include people suspected of having information about the Vauxhall car which was stolen in Carrickmacross two days before the bombing and used to transport the bomb from south Armagh to Omagh.
The four men being held by the RUC were being questioned about the actual bombing.
Investigators believe the bomb was constructed just north of the Border in the Jonesboro area of south Armagh and driven by two local men to Omagh.
The group responsible was led by former leading Provisional IRA members who left the organisation and set up a group called the "Real IRA" along with members of the group known as the "Continuity" IRA and former members of the splinter republican terrorist group, the Irish National Liberation Army.