The OSBI is offering a $5,000 reward for information to help solve a 30-year-old cold case out of Owasso. 32-year-old David Simpson of Owasso was found shot to death at his home at 2007 North Cedar in Owasso on May 15, 1987. He worked at Rockwell International in Tulsa and was an avid racecar driver and fan. The OSBI says agents have conducted nearly one hundred interviews and analyzed numerous pieces of evidence, but nothing points to a suspect. They consider the case 'cold'. If you have information, contact the OSBI by calling 1-800-522-8017 or email tips@osbi.ok.gov.