How do you lose an inflatable pig that's as big as a two-story house?

Have you seen this pig? There's a $10,000 reward for its return.

The big escape happened Sunday in Indio, Calfiornia, on the last night of the Coachella Valley Music and Arts Festival. Former Pink Floyd bassist Roger Waters was performing his song, "Pigs," to 50,000 people when a giant balloon in the shape of a 50-foot pig rose from behind the stage and floated above the audience. (Fans will be familiar with such displays going back to Pink Floyd's "Animals" tour in the '70s.)

Organizers cut the anchor cables free Sunday night and made plans to retrieve the pig when it landed - but as of late Monday, the inflatable animal has not been located. Now, his owners are offering a $10,000 reward for his safe return, plus lifelong tickets to Coachella for four people.

If a 50-foot pig floats by your window, please contact lostpig@coachella.com. The pig can be identified by graffiti on its sides, and the name "Obama" spray-painted on its underbelly.

- Denise Quan, CNN Entertainment Producer

Postscript, Wednesday 10:21 a.m. ET: The pig has been found! See this Associated Press article for details.