A British Airways flight was delayed for hours because a mouse was spotted on the plane.
Passengers had already boarded the 10.40am flight from Heathrow to San Francisco when it was announced there was going to be a delay.
They were told they had to change planes, but were informed that it would be several hours before a gate would be available for the new plane.
A passenger told the BBC that it was announced that "a rather unusual occurrence has occurred".