Gardai do not believe there was anything sinister behind a break-in at Naas Courthouse early on June 27.
A United States citizen, aged 28-29 was detained on the ground floor of the court building and arrested shortly after 2.10am.
A man was seen climbing over a railing to the side of the building and shortly afterwards a security alarm activated.
The man was found by gardai in a follow-up search.
It is understood that no damage was caused and no property was stolen.