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06/05/2012 01:39 pm ET | Updated Mar 14, 2013

Gavin Smith, Missing FOX Executive: Family To Announce $20,000 Reward For Information (VIDEO)

The family of missing Fox executive Gavin Smith will announce Tuesday a $20,000 reward for information that will help bring him home, CBS reports.

Smith was last seen May 1 in Oak Park, Calif. Believing their father may have driven off a cliff, Smith's three sons joined the police in their search of the canyons. They also covered the city with missing person posters of their father and started a website, findgavinsmith.com, to encourage others to help.

However, some individuals told NBC that they saw Smith and a tall female companion at Taco Temple, a popular restaurant in Morro Bay, on May 7.

"They were kind of quiet when they first came in and then once I got them talking, they seemed real friendly," said waitress Marcy Carney, who remembers the pair because of the big tip she received at the end of the meal. "I'm pretty sure they said they were headed north," she said.

David Brill, a businessman from Madison, Wis., told NBC he noticed Smith because of his height and unusually white teeth. The next morning at the office, said Brill, he read a news story about a missing Hollywood executive and recognized Smith in the accompanying photo.

The Los Angeles Sheriff's Department has told The Huffington Post that the department has not encountered any evidence of foul play thus far, although he conceded that the possibility "obviously" can't be ruled out.

Smith is a distribution executive for 20th Century Fox who has worked on films like "Avatar" and "Star Wars." In 1975, he played on UCLA's championship basketball team under legendary Coach John Wooden.

Smith was last seen wearing purple workout pants and black and gray shoes, as he left the home of a family friend in Oak Park at about 10 p.m. on May 1 in his black Mercedes.

Smith has walked out on his family at least once before, reports E! Online. "Thoughts and prayers out to my amazing Mom and my bros plz," his son Evan tweeted in April. "My Dad decided to leave the family last night. Real Family sticks together."

Evan later deleted the message (see a screenshot) and told E! Online that his parents have never separated. "They were just going through normal stuff couples go through," said Evan.

Investigators are asking that anyone with information call (323) 890-5500.

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