AceShowbiz - Comedian Dane Cook is urging the public to join the search for a teenage girl who has been reported missing in California. 17-year-old Chelsea King disappeared in her native Poway, near San Diego, California last week and her family has launched an internet campaign in a bid to help locate her.

Cook has now joined the search efforts by posting details of the case on his Twitter page. The funnyman published a link to a website dedicated to finding Chelsea and urged his fans to report any possible sightings. He writes, "Do u (sic) know this missing girl? 17 years old gone since 2/25/10 - San Diego area - please help find her - www.findchelsea.com."

On another news, Dane Cook has sparked rumor that he has a romantic relationship with Julianne Hough after the two were spotted enjoying dinner together at Hollywood's Katsuya sushi restaurant on Saturday, February 27. Although they arrived separately, the rumored couple left the eatery together in Cook's car.