The incident happened on Tuesday aboard a Norwegian Air Shuttle airplane when a mouse was spotted while the plane was preparing to take off.
Staff frantically began to search the cabin for the rodent, but the flight ended up being delayed by five hours until the mouse was finally captured, 'The Local' reported.
"A mouse was discovered aboard the plane, which delayed the departure," Norwegian Air Shuttle's spokesperson, Charlotte Holmberg Jacobsson, said.
According to Romerikes Blad, a local newspaper, Jacobsson said that mice are not often found aboard an aircraft.
Jacobsson, however, did not comment on how passengers aboard the flight reacted to the unusual delay, the report said.