Contra Costa Co (BCN) -- The Federal Bureau of Investigation served a search warrant at a  business in El Sobrante Wednesday, an FBI spokeswoman confirmed.
      
FBI spokeswoman Julie Sohn said federal agents served the warrant  in the 4900 block of Appian Way, but said she could not disclose further  details about the operation since the search warrants are sealed.
      
According to a neighbor, cars and people poring over documents  filled the parking lot of Pinnacle Realtors' office this afternoon, located  at 4990 Appian Way.
      
The neighbor said he knew little about the company, which moved  into the building about two years ago. The building previously housed a deli,  he said.
      
According to Pinnacle Realtors' website, the business is owned by  Juan Mancheno of Orinda, who specializes in FHA financing for first-time  buyers and other real estate services.
      
Mancheno declined to comment.

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