Over the years, the FBI has received numerous tips allegedly placing him in Novato, California; San Rafael, California; Santa Cruz, California; and Northampton, Massachusetts. Aside from the northern California region, he has overseas ties to Germany, Spain, France, Italy, Costa Rica, and Bolivia. If overseas, he may possess documentation allowing him residency but may not be fluent in a foreign language.
On August 28, 2003, two bombs exploded approximately one hour apart on the campus of a biotechnology corporation in Emeryville, California. Then, on September 26, 2003, one bomb strapped with nails exploded at a nutritional products corporation in Pleasanton, California.
A federal arrest warrant was issued for San Diego in October 2003. In April 2009, he was added to the FBI’s Most Wanted Terrorist List, making him the first domestic terrorist placed on this list. The FBI is offering a reward of up to $250,000 for information leading directly to the arrest and prosecution of San Diego. The reward can be paid confidentially.
San Diego, who was a California resident, was described in October 2003 as a white male with a light complexion, 6’0” tall, 160 pounds, with brown hair and brown eyes.
At the time of his disappearance, San Diego ate neither meat nor any food containing animal products. The FBI’s Behavioral Analysis Unit (BAU) assessed if he has maintained this discipline, people around him may notice that he avoids consuming or wearing anything made with animal products.
Several years of living as a wanted fugitive may have forced San Diego to engage in secretive behavior. BAU believes this deception may affect other areas of his life, to include being vague or contradictory about his past history, routinely using prepaid cell phones or calling cards, or often changing his e-mail address. 
Because of his training in computer networking, San Diego may be known by those around him as someone to offer computer-related assistance. He may also be using his English language abilities to be teaching, translating, or part of a service industry such as tourism overseas. He is also known to cook and bake vegan and vegetarian foods and to have an interest in sailing. He may be using these skills as a form of income, specifically for cash to avoid using banks, checks, and credit cards.
San Diego should be considered armed and dangerous.
Anyone with information about the identity or whereabouts of the suspect is urged to contact their nearest FBI office or dial 911. The FBI can be reached 24 hours a day at 415-553-7400 in the San Francisco area. All calls are confidential. Tips can also be submitted at tips.fbi.gov.
