A theme park is to be prosecuted by the Health and Safety Executive (HSE) following the death of a teenager three years ago.
Hayley Williams's family have been told of the decision to prosecute
Hayley Williams, 16, from Pontypool, died at Oakwood in Pembrokeshire in 2004 after falling from the Hydro Ride.
The HSE confirmed it intends prosecuting the park and that Ms Williams's family had been informed.
An Oakwood spokeswoman said they would continue to co-operate fully with the HSE investigation.
A statement from the HSE said it had met the company and told them they intended to prosecute them under the Health and Safety at Work Act.
It added: "Due to legal processes linked with the ongoing investigation into other aspects of this matter, HSE is unable to indicate when formal charges will be laid and the summons will be served, or when the matter will be brought to court."
The Oakwood spokeswoman said: "Since their investigation is still on-going, we cannot comment further on this matter at this time."
Sunday School teacher Ms Williams had been visiting the park with family and friends when she died after falling 100ft from the rollercoaster in April 2004.
At the inquest exactly a year ago, coroner Michael Howells directed the jury to return either an accidental death or narrative verdict, which simply outlined the facts and circumstances of Ms Williams's death.
After the jury returned a narrative verdict, the family expressed their disappointment that an unlawful killing verdict was not considered.
Oakwood said it was "deeply affected" by Ms Williams's death and added that the theme park was safe.
Speaking at the time, her father Alan Williams, said: "She was the most precious and loving of daughters, always smiling and she loved her family and friends dearly.
"Her loss to us has been unbearable and our lives and those of her friends have been shattered."