A man was arrested and quizzed by Gardai in relation to an alleged sexual assault in the city centre before Christmas.
A student was reportedly dragged down a city centre street in the early hours of December 2.
The young woman, who is believed to be in her 20s, was allegedly brought down a laneway beside Winetavern Street, near Christchurch Cathedral.
Over 750 incidents of crime reported in Dublin 9 area in the past four months
The student, who is beleived to be from Germany, rang 999 after the alleged incident and was in a "highly distressed state".
Gardai and emergency services located the woman near Wood Quay a number of minutes later.
The student was taken to hospital and assessed at a sexual-assault treatment centre.
Student allegedly dragged down Dublin city centre street and sexually assaulted
The man was arrested last month in suspicion of the attack but was later released without charge.
In a statement to Dublin Live, a garda spokesman said: "Gardaí investigating the alleged sexual assault of a woman that is reported to have occurred in the early hours of December 2, 2018 in the Dublin 2 area arrested a male on March 11, 2019.
"He was detained at Kevin Street Garda Station on Section 4 of the Criminal Justice Act and was later released without charge."
A file will be prepared for the Director of Public Prosecutions.
