A bus was destroyed when a fire broke out onboard as it travelled through Northumberland.
An investigation is under way into the cause of the blaze that left the Arriva North East bus a smouldering shell.
Luckily the bus was not in service at the time of the incident and no passengers were involved.
Firefighters received a call just before 8.30pm on Monday evening reporting that a bus was on fire just off the southbound A1 at the Felton turn-off in Northumberland.
When they arrived at the scene they found the vehicle well alight.
Russell Stalker, crew manager at Alnwick Fire Station said: “It was like a fireball.
For anyone in the area it was quite a sight.
“There was nobody on the bus when we got there and we were at the scene for a few hours to bring it under control.
“It had been travelling southbound on the A1 when the driver had noticed a problem with the engine and luckily had managed to pull off on the slip road.
“We went back to check on it the next morning as it was being moved by highways just to check there was no reignition.
“It is suspected that it was caused by an engine problem, but an investigation is now under way.”
Nick Knox, area managing director of Arriva North East, said: “We can confirm that there was an incident on Monday evening with one of our buses being involved in a fire.
“The bus was not in service and there were no passengers on board at the time. We are currently conducting an investigation into the cause.”