Kieron O'Donoghue, 35, of Valentine, did not appear in Toronto Local Court from Parklea Correctional Centre on Tuesday charged with 14 offences, including nine counts of having sexual intercourse with a person aged between 14 and 16 years, grooming a child for unlawful sexual activity and traveling to meet a child groomed for sexual activity.

In his stead was solicitor Lauren O'Brien, who made clear her frustrations with delays in the case and opposed an application by the police to have the matter adjourned for another six weeks.

Ms O'Brien told Magistrate Alan Railton she had received a brief of evidence more than three months ago and her client had made "full admissions" to police upon his arrest in October. 

"For this to go over to May is going to be justice denied," Ms O'Brien said.

Mr Railton agreed, adjourning the matter to Newcastle Local Court on April 10, when the charges against Mr O'Donoghue will be finalised by the DPP.

Child Abuse and Sex Crimes Squad detectives say they launched an investigation in September last year after a 15-year-old girl reported she had been sexually and indecently assaulted by a man she met online. 

Police allege the pair met on a social media application designed for teenagers, where the man claimed to be 17-years-old.

Police say the pair engaged in conversation before arranging to meet in person.

The man later told the girl he was 27, police say.

The pair allegedly met in Newcastle on September 29 and had sex.

The girl reported the incident to police and the matter was referred to the Child Abuse and Sex Crimes Squad for further investigation.

After making inquiries, detectives arrested Mr O'Donoghue at a unit at Valentine on October 15.