Bus Éireann has launched an investigation into an incident where a woman reportedly travelled up to 25km in the baggage compartment of one of it coaches.
The cancer patient was travelling to her home in Ballyvaughan in Co Clare from Galway where she has been undergoing treatment.
When the bus stopped in Ballyvaughan, the woman is understood to have climbed into the baggage compartment to retrieve her bag.
However, the bus continued its journey to Doolin, a further 25km away, where the woman was discovered.
Bus Éireann is now investigating the circumstances of the incident, which occurred in recent weeks.
A spokeswoman said: "Bus Éireann takes complaints very seriously and we investigate all complaints.
"This matter is currently being investigated and you will appreciate no further comment can be given pending the outcome of the investigation."