The Health Service Executive has said it will publish a report tomorrow of a review into the treatment of more than 1,300 children and young people who attended its South Kerry Child and Adolescent Mental Health Services over a three-and-a-half year period up to April last year.

The HSE is issuing written apologies to around 250 families for care deficiencies identified in the review.

This review was commissioned by the HSE after concerns were raised about the treatment of a number of children and teenagers attending its South Kerry Child and Adolescent Mental Health Services.

The files of around 50 young people were initially examined, following which the HSE decided to review the care received by everyone who attended the services between July 2016 and last April.

A 13-person review team was assembled, led by London-based consultant child and adolescent psychiatrist Dr Sean Maskey who, the HSE said, would provide external, independent oversight.

The HSE will send copies of Dr Maskey's final report to around 250 families, where the review identified significant problems with the treatment their children received.

It is understood the review deals with inappropriate prescribing of medication, along with issues relating to diagnoses and missing medical notes.

A copy of the report has been sent to Minister for Health Stephen Donnelly.

The HSE said it will publilsh Dr Maskey's report tomorrow, and has appealed for time and space to be able to communicate directly with the families of the young people involved.

In a statement, the HSE said: "Our priority remains the young people affected and their families. Before we publish the report formally, we want to make sure that young people and their families receive the report summary and other documentation which will support them in reading and processing this detailed report."

The HSE invited dozens of young people and their families to individual meetings at a hotel in Killarney in November.

A verbal apology was issued at those meetings in each case where "deficits" in care were identified by the review.

Those apologies will now be repeated in writing when the final report is sent to the families involved today.

The HSE is also operating an information line for those affected - 1800 742 800 - which is open from 8am to 8pm, seven days a week.