Gardaí have released without charge a man who was arrested yesterday as part of a probe into alleged insider dealing.
A file is to be prepared for the Director of Public Prosecutions.
Detectives from the Garda National Economic Crime Bureau (GNECB) arrested the man as part of an investigation into insider trading contrary to the European Union (Market Abuse) Regulations 2016.
The inquiry started after a report was given to the GNECB by the Central Bank.
The man was questioned at a south Dublin garda station.
The GNECB said yesterday that the extensive investigation had progressed with the assistance of personnel attached to the Central Bank.
"Their expertise and experience had been invaluable," the statement said.
