It follows the arrest of two men in their 30s yesterday as part of the ongoing investigation into the incident that took place last week.

The second man has been released from custody.

The man who was charged in connection with the incident is scheduled to appear before a special sitting at Kilkenny District Court this morning.

Peadar Doyle, 66, was brought to the post office on the Staplestown Road in Co Carlow last Friday by two men.

The two men left after staff became suspicious and concerned for Mr Doyle's welfare.

It was later discovered that the man had died, and his body was removed from the post office.

On Wednesday, gardai investigating the incident arrested two men in their 30s.

The men were detained under section 4 of the Criminal Justice Act.

One man was released on Wednesday night and gardai said a file will be prepared for the Director of Public Prosecutions (DPP).