The trial of a well-known television celebrity has started in Dublin.
The celebrity, who is now in his 40s, is charged with engaging in sexual acts with a 16-year-old girl.
The girl was 16 at the time of the incidents and the man was then aged 27.
He denies all of the charges against him as he appeared at Dublin Circuit Criminal Court.
The accused has pleaded not guilty to three counts of engaging in sexual acts with a child under the age of 17 at locations in Dublin on dates between August 2010 and December 2010.
The jury was told they would hear evidence that the girl had finished Transition Year in school when she met the accused at the Oxygen music festival concert in 2010.
She at first told him she was 18, but later told him she as 16, Ms Brennan said. After the concert they were in contact by phone.
They jury was told it will hear evidence that the pair met on a later occasion when he took her to his place of work and she performed oral sex in a stairwell.
The charge against the celebrity was brought under the Criminal Law Sexual Offences Act of 2006 which makes it an offence to perform such acts and was there to protect children.
The trial before Judge Pauline Codd and a jury is expected to last four to five days.
