A man has been arrested by gardaí investigating a murder in Co Louth last year.
Séamus McMahon (41) was shot dead at a property at Bóthar Chroinn, Dundalk, Co Louth, on March 21st.
He died over what was believed to be a personal matter but his death was at the time linked to dissident activity. He was previously charged with being a member of the IRA although he was later acquitted at the Special Criminal Court.
A 30-year-old man was arrested in Drogheda today and is being detained at Drogheda Garda Station under the provisions of section 50 of the Criminal Justice Act, 2007.
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He is the third person to be arrested in connection with the investigation.
