The parents of a student who was hit by a train in London have accused British Transport Police (BTP) of failing to properly investigate his death.
Connor Marron, 19, from Ahoghill, County Antrim, had been at the PDC World Darts Championship at Alexandra Palace with a friend before he died in the early hours of 2 January 2022.
He was discovered near Hornsey station.
BTP said it launched an internal review into its handling of the case and has since implemented its recommendations.
An open verdict was recorded at an inquest last year.