Gardaí investigating the death of Christopher Warren in Dublin have arrested a second man.
Mr Warren, who was 35, was left outside St James's Hospital with gunshot wounds on Friday evening. He later died from his injuries.
Gardaí at Mountjoy arrested a man in his 20s in the Dublin 8 area this morning.
Earlier, they released the first man they had been questioning.
A file is being prepared for the Director of Public Prosecutions.
The car that was used to drop Mr Warren at hospital was located on Cork Street and was examined by a team of forensic specialists.