A swim coach was taken to a West Dublin Garda station.
Gardaí in Dublin are investigating the alleged sexual exploitation of children.
They have arrested and questioned a swimming coach.
Parents believed there were hidden recording devices in children's dressing rooms.
They raised the concerns with Swim Ireland who later reported the claims to Gardaí.
They feared there were hidden cameras in dressing rooms.
The facilities are frequently used by children before and after swim class.
A swim coach, aged in his 30s, has been arrested.
Gardaí spoke to parents and children prior to his arrest. They also gathered substantial evidence before questioning the man.
Swim Ireland told
RTÉ: "The matter is now being investigated by the gardaí.
"Our priority is to offer appropriate support."
Swim Ireland does not believe this issue was "previously raised with the gardaí".
Their National Children's Officer is liaising with Gardaí.
Gardaí arrested and questioned the swim coach last Tuesday.
The swim coach is aged in his 30s, but his identity has not been revealed.
The man was taken to a West Dublin Garda station, but he was released without charge.
Gardaí are currently preparing a file for the DPP.
The DPP will then decide if he will face charges or not.
Gardaí stressed that the investigation is ongoing.
"As this is an ongoing criminal investigation An Garda Síochána has no further comment."
