Rail services on the Wesport- Dublin Heuston have resumed as normal.
Passengers on the service, which includes stops in Castlerea, Roscommon, Ballinasloe and Athlone were hit with delays on Wednesday.
Irish Rail say a fire developed in the undercarriage area near the gearbox of one carriage on the 12:45 Heuston to Westport service.
Around 100 passengers were onboard the service when it stopped near Glanduff National School.
Irish Rail have confirmed that fire suppression systems were activated and the driver used fire extinguishers with the fire subsequently put out.
As a precaution and due to smoke, the driver arranged for customers to move from the relevant carriage to an adjoining carriage, and the fire services were alerted.
Bus transfers for the passengers who were onboard the service were arranged.
