A Portuguese woman was attacked at around 3am in the north inner city
A man has been arrested following a violent sexual assault in Dublin's north inner city.
A Portuguese woman was attacked at around 3am on Monday morning in an alleyway at Parnell Place.
It is understood the alarm was raised when concerned residents heard the woman screaming.
Gardaí arrived on the scene while she was still being assaulted.
The woman was taken to the Sexual Assault Treatment Unit in the Rotunda.
A man in his 30s was arrested at the scene but became ill and had to be brought to the Mater for treatment.
It means his period of detention has been delayed.
Reporting from Aideen Finnegan ...