A man (26) has been arrested by Gardaí in Cork in connection with the death of woman earlier this year.
The body of Amy McCarthy (22) was discovered in a vacant office block on Sheares Street on April 30th.
Gardaí were alerted by a man in the building who tried to wake Ms McCarthy.
She was pronounced dead at the scene.
It emerged that Gardaí were awaiting the results of certain toxicology tests on blood samples taken from the young mother before they decided what course their investigation would take.
It is believed the results of the tests were received recently.
This morning, Gardaí moved to arrest a man in the Midlands who would have been known to Ms McCarthy.
He was taken to the Bridewell Garda Station where he can be held for up to 24 hours.