A knife assault victim's DNA was linked to a bloodstained jacket found at the home of a man accused of attacking three women, a court has heard.
The trial of Slawomir Gierlowski (33) also heard evidence that his DNA profile matched semen traces found on the victim of a sexual assault in 2015.
The defendant's DNA was also linked in evidence to the underwear of a victim of a sexual assault in 2011.
Mr Gierlowski, of Galtymore Road, Drimnagh, Dublin, denies attacking three women on dates in 2011, 2015 and 2016 at locations around Clondalkin in south Dublin.
The women cannot be identified for legal reasons.
On day eight of the trial at Dublin Circuit Criminal Court, Dr David Casey of the Forensic Science Laboratory said he examined a number of items relating to the 2016 incident, including a Diesel jacket with two bloodstains.
The jacket was taken from the master bedroom in the home of Mr Gierlowski during a search by gardai in June 2016.
Dr Casey said that a bloodstain from the cuff of the jacket generated a DNA profile matching DNA obtained from the third victim.
The witness said that a DNA profile lifted from the mouth of a beer bottle, found in Knockmeenagh Lane after the attack, matched the DNA profile of Mr Gierlowski.
Dr Casey also checked the defendant's DNA profile against DNA obtained from evidence from attacks on two other women in 2015 and 2011.
Dr Casey said the defendant's DNA profile matched the DNA profiles obtained from blood on the belt and from the underwear of the woman involved in the 2015 incident.
Mr Gierlowski has pleaded not guilty to nine charges, including false imprisonment, sexual assault and assault.
The trial continues before Judge Pauline Codd.