Two men arrested by gardaí in connection with the Omagh bombing have been released without charge.
The pair, in their 20s, were detained in County Monaghan on Sunday.
A third man, who was detained in Dundalk, Co Louth, is still in custody at Carrickmacross in Co Monaghan, according to a garda spokesman.
The man, in his mid 30s, can be held for up to 72 hours before he is charged or released, or his period of detention is extended.
The men were arrested as part of the ongoing investigation into the 1998 Real IRA bombing of Omagh.
The first and only conviction in relation to the bombing, in which 29 people were killed, was secured last month.
Building contractor Colm Murphy (49) from Ravensdale, Dundalk, Co Louth, was convicted in January by the Special Criminal Court of conspiracy to cause the Omagh bombing and is now serving a 14-year prison sentence.
Over 80 people have been arrested in relation to the inquiry since the bombing, but have been released without charge.