The boy was transferred to Temple Street Hospital in Dublin.
A 13 year old boy has died after the tractor he was driving overturned.
It happened in Co. Mayo on Saturday, but the child died yesterday at a Dublin hospital.
The young teenager was driving a tractor on a local road, at Scarduane near Claremorris shortly after 8.15pm on Saturday night when it overturned
The 13 year-old boy was treated at the scene for serious injuries and was brought to Galway University Hospital.
He was then transferred to Temple Street Hospital in Dublin - where yesterday he was pronounced dead.
A garda forensic colision investigation team have examined the road where the accident happened.
It's now been fully reopened to traffic and Gardai are appealing for any witnesses to contact them.