A homicide investigation is underway in Orange County after a man was found dead in his home Saturday night.

The Orange County Sheriff’s Office said at approximately 9:45 p.m. Saturday, the Orange County Fire Department went to 311 3rd Street in Taft for a well-being check.

Investigators said when firefighters arrived they found Julian Gresham, 81, stabbed to death and his vehicle, a 2006 Beige Ford Taurus SE with Florida tag SKM3U, missing.

Homicide investigators said they are looking for his daughter, 45-year-old Tessie L. Gresham and her boyfriend, 53-year-old David C. Buchan as persons of interest.

Anyone with information on their whereabouts is asked to call Crimeline at (800) 423-TIPS (8477).