A man has been found guilty of sexually assaulting a young woman in Dublin as she walked home.

Anthony Lyons, 51, of Griffith Avenue in Drumcondra had pleaded not guilty to assaulting the 27-year-old woman on 3 October 2010.

Lyons had claimed he was overcome with an irresistible urge after taking alcohol, cough medicine and the cholesterol medication Rosuvastatin, which he had begun taking around 30 hours previously.

The jury of 11 men and one woman deliberated for three hours and 16 minutes before unanimously finding him guilty of the assault.

The woman told the court she was rugby-tackled to the ground and sexually assaulted by Lyons while walking home.

Lyons initially denied any involvement to gardaí, but he later said he could not resist assaulting her after she fell on the ground beside him.

The prosecution case was that Lyons had waited until the woman reached the darkest part of the street before assaulting her.

It said he had attempted to take steps to ensure he was not caught. It said he had tried to take her mobile phone from her, had put his hand on her mouth and around her throat to try to prevent her getting help.

The prosecution said these facts were clear and unambiguous evidence of intent and were not signs of a man who did not know what he was doing was wrong or who was not in control of his actions.

The defence had asked why a 51-year-old man of unblemished character with no previous convictions would suddenly behave in such an out-of-character manner.

The young woman burst into tears after the verdict was announced.

Lyons was remanded on bail for sentencing on 30 July.