Gardaí in Dublin have released a man arrested earlier this week in connection with the murder of Latvian woman Baiba Saulite last year.
The man was arrested on Tuesday at his home in the Finglas area and was the fourth person questioned in connection with the suspected contract killing.
He was reportedly an associate of murdered drug dealer Martin 'Marlo' Hyland and was suspected of helping to provide the gun and car used by the killers.
Gardai released him from custody today pending instructions from the Director of Public Prosecutions.
Ms Saulite, a 28-year-old mother-of-two, was shot dead at her home in Swords, Co Dublin, last November.