Gardaí said that the incident has been referred to the Garda Síochána Ombudsman Commission (GSOC) as one of the vehicles involved was subject to an interaction with An Garda Síochána prior to the crash.

Source: https://www.thejournal.ie/cork-crash-8-6107213-Jul2023/

GSOC confirmed in a statement that the matter had been referred to them by gardaí.

Source: https://www.irishpost.com/news/teen-who-died-in-co-cork-collision-named-locally-as-incident-referred-to-garda-ombudsman-256277

GSOC has launched an internal investigation.

Source: https://carlow-nationalist.ie/2023/04/22/garda-ombudsman-revelations-not-being-understated-by-government-obrien/

In a statement, Mr Harris said: "That investigation is being considered by GSOC, so it would not be appropriate for me to comment on it at this time.

Source: https://www.irishexaminer.com/news/politics/arid-41122468.html