Two men have been arrested this morning by gardaí investigating the murder of Mark Desmond in Dublin last year.
The two, both in their 20s, were arrested following a planned operation in the Clondalkin area.
The body of Mr Desmond, a convicted criminal, was discovered at Griffeen Valley Park on 2 December 2016.
He had been shot at least three times in the head.
Two other men were arrested as part of the investigation yesterday.