More than 40 passengers were evacuated from a Bus Éireann Expressway service to Galway after a fire broke out on board this evening.

Passengers said the driver told them to leave the bus immediately when the Sligo to Galway service pulled into Charlestown in Co Mayo just before 6pm.

It is understood that smoke was seen coming from the dashboard shortly before the bus arrived in the town.

After the passengers disembarked, the area around the driver's seat caught fire.

The heat from the flames caused a window on the bus to shatter but the blaze was brought under control soon afterwards by fire service personnel.

No injuries were sustained during the incident.

Bus Éireann has said it would be carrying out an investigation to determine what caused the fire.

The vehicle will be examined in detail in the coming days in an effort to ascertain whether an electrical fault was the cause of the blaze.