Garda Commissioner Martin Callinan said he had been deeply saddened to hear of his colleague's death.
He was a very popular member of An Garda Siochana, a very efficient member, someone who was revered both by his peers and members of the community where he served.
More top news
Springwatch presenter Chris Packham describes his battle with depression as "great, hopeless vacuum".
A newly promoted police officer caused a sensation with local women on Facebook
Ex-London mayor Ken Livingstone says he is sorry for the "disruption" caused by his comments that Adolf Hitler was a supporter of Zionism.