UPDATE at 9:37 a.m.

The skateboard appears to have been found, but Hawk is waiting for someone to verify on Twitter.

Apparently it was tucked away near the cell phone parking lot at Bush airport, according to social media reports.

A Facebook post from Sean Riggs reads, "Look who found the skateboard that Tony Hawk left at the airport for someone to find !!!"

Sean told Chron.com that his wife Bunny Riggs heard about the scavenger hunt, and recognized the location near her workplace at Bush Airport. He said she found the board just as other people started swarming the area.

"She called me and said, 'I found it! I found Tony Hawk's skateboard'," said Sean Riggs.

He said he had no idea about the scavenger hunt. "Well, who do we have to give it back to?" he replied.

"No, he left it for me to find," said his excited wife.

Photo: Bunny Riggs Photo: Sean Riggs/Facebook Photo: Twitter Photo: Bunny Riggs Photo: Bunny Riggs Photo: Bunny Riggs Photo: Courtesy Photo: Instagram Photo: Mike Sims Photo: Instagram Photo: Courtesy Photo: Bob Levey, Getty Images Photo: Yi-Chin Lee, Staff / Staff Photographer Photo: Emma McIntyre/Getty Images Photo: Courtesy Photo: Courtesy Photo: Nick Scurfield Photo: Courtesy Photo: Courtesy Photo: Courtesy Photo: Courtesy Photo: El Tiempo Photo: Vianney Le Caer, Associated Press Photo: Houghton Mifflin Harcourt Photo: Gary Fountain, Contributor Photo: Dave Rossman, Contributor Photo: Quy Tran Photo: Kylie Jenner Instagram Photo: Instagram Photo: Instagram Photo: Courtesy Photo: Courtesy

Coincidentally, it turns out today is Bunny's birthday.

***

The clock is ticking for anyone in Houston who wants a free skateboard from Tony Hawk.

The legendary skateboarder posted a photo on Twitter of the skateboard at an undisclosed location near George Bush Intercontinental Airport. In the photo, the skateboard is resting upright behind a guardrail along the road.

"I just left my skateboard kinda close to Houston airport," Hawk said. "Finders keepers if you can figure out where this is. Please reply with the hashtag on the griptape if found. Go now!"

The photo has already been viewed hundreds of times since it was posted at 8:19 a.m., so you'd better get started.

Julian Gill is a digital reporter in Houston. Read him on our breaking news site, Chron.com, and on our subscriber site, houstonchronicle.com. | julian.gill@chron.com | NEWS WHEN YOU NEED IT: Text CHRON to 77453 to receive breaking news alerts by text message | Sign up for breaking news alerts delivered to your email here.