A dirty diaper stuck in a toilet is being blamed for grounding a passenger plane flying between the Australian capital cities of Darwin and Brisbane.
Qantas Flight 825 was forced to land at Mount Isa on Sunday after passengers and crew complained of a "strange smell" wafting from the front of the cabin.
But a commenter on the Aviation Herald website, calling himself "Frank Smith," revealed the culprit.
"Unfortunately the fumes turned out to be a very smelly nappy [diaper] dumped in the forward toilet," he said.
"Procedures dictate to land as soon as possible. [It's] very embarrassing for us all at [Qantas], but, better safe than sorry."
Qantas spokeswoman Lauren Blank failed to confirm or deny the allegations.
In a statement, she said an "odor" was detected.
More than 160 people were on board the Boeing 767 when it was delayed by about an hour after diverting to the Queensland city of Mt. Isa.
With no stairs available at the airport to remove passengers from the plane, a cherry picker was used to carry the travelers to the tarmac about 10:30pm local time.
The aircraft resumed its journey at 11:15pm and underwent inspections in Brisbane until 3:00am the next morning.