Gardai say they are not now treating the death of a child in St Johnston as suspicious.
An investigation was launched after the 9-year-old boy was found unresponsive at a private house on Monday evening last.
He was pronounced dead a short time later and his remains were taken to Letterkenny University Hospital.
Gardai issued a statement to say they were awaiting the results of a post mortem to decide what direction their investigation would take.
They say they are satisfied the child died of natural causes.
The boy, who has not been named, was laid to rest earlier today.