A woman in her 20s has been arrested over the gun murder of a man in Dundalk more than a year-and-a-half ago.
She was detained in north Co Louth over the killing of father-of-one Seamus McMahon who was shot dead at an apartment in the Saltown area of the town on March 21st, 2010.
The woman is the fourth person arrested in the inquiry and was being held under Section 30 of the Offences against the State Act.
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