A close relative of a government minister is under garda investigation in connection with an alleged fraud involving rent money.
The middle-aged man was arrested by gardai and taken to Dun Laoghaire garda station, south Dublin, for questioning.
He was held throughout the day under Section 4 of the Criminal Justice Act, which allowed the gardai to detain him for up to 24 hours.
The suspect was released without charge on Thursday night. However, garda inquiries into the alleged fraud are continuing and a file will eventually be prepared by officers for the Director of Public Prosecutions, who will determine if there should be criminal charges in the case.
The investigation was launched after a complaint was made to gardai by a woman about a substantial amount of money that she alleged was owed to her.
The woman told gardai that she owned property on the southside of Dublin and it had been rented out. She alleged that the suspect had received rent payments for the property but had failed to hand them over to her.
The woman's complaint is believed to relate to financial dealings between June and October last year. It is understood that garda inquiries into the fraud complaint are well advanced and the file to the DPP is expected to be sent off in the coming weeks.
However, in recent days fresh information provided to the gardai has led to additional inquiries being pursued in the investigation and this has resulted in a delay in putting together the final details for the completion of the file.
The extent of the alleged fraud has not yet been determined because of those additional lines of inquiry.