$10K offered for missing teen info MORGAN HILL, Calif., April 8 (UPI) -- The family of missing California teenager Sierra LaMar announced a $10,000 reward for information leading to her safe return. Steve LaMar, Sierra's father, said the family scraped together the money from donations and fundraisers. "We're hoping it might give someone the motivation to come forward," he said. "We're desperate for anything that can bring her home to us," he told the San Jose (Calif.) Mercury News Saturday. The hunt for Sierra expanded to a 20-mile radius from her Morgan Hill home as thousands of volunteers aided in the search, the newspaper reported. San Francisco 49ers Joe Staley, Delanie Walker and Scott Tolzien on Saturday joined quarterback Alex Smith, who started helping the effort March 31. "When those kinds of people get involved, it gives us a whole new audience," said Danielle LaMar, Sierra's sister. Sierra was last seen the morning of March 16 as she left her mother's Morgan Hill home to go to school.