The trial of a man accused of exploiting and sexual assaulting a teenager has heard how the alleged perpetrator told the girl to change the name he was listed under on her mobile phone, to ensure he would not be linked with messages he was sending her. 

The man - who is in his late 30s - has denied a total of 20 charges in connection with offences alleged to have taken place in the west, on dates between 2014 and 2015. 

He is accused of child exploitation, defilement and sexual assault. 

Jurors at the trial have watched a series of videotaped interviews with the complainant, which were recorded by investigating gardaí, after the matter was reported to them. 

During a number of separate interviews, she described how the abuse started and then escalated in the months that followed.

The teenager told detectives that she had changed the man’s listing on her mobile phone, after he told her not to tell anyone about the abuse. 

She outlined how she was confused by what was happening and was fearful that people would find out about it.