Mr Fitzgerald was shot dead on Tuesday night at a property near Beary's Cross on the Tipperary road.
A man was arrested last night, bringing the number of people in custody in relation to the incident to eight.
Updated: 11:22, Thursday, 10 December 2009
Eight people are now being questioned by gardaí in Limerick in connection with the fatal shooting of 24-year-old Danny Fitzgerald.
Mr Fitzgerald was shot dead on Tuesday night at a property near Beary's Cross on the Tipperary road.
A man was arrested last night, bringing the number of people in custody in relation to the incident to eight.