The San Francisco Chronicle claims none of her staff ever knew what was going on and just kept the story quiet.

CBS Local reported:

New details emerged Wednesday about how a mole for the government of communist China managed to stay by Senator Dianne Feinstein’s side for nearly 20 years.

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It happened five years ago, but additional information is just surfacing about how the Bay Area senator’s office was infiltrated by a Chinese spy.

The Bay Area is a hotbed for Russian and Chinese espionage. Late last year, the feds shut down the Russian consulate in San Francisco.

You may remember the thick black smoke that billowing from building before Russian diplomats turned it over to authorities, presumably produced by burning documents.

Now, all eyes are on Chinese intelligence in the Bay Area after the website Politico reported last week that a staffer for Senator Feinstein turned out to be a Chinese spy who reported back to the government officials about local politics.

On Wednesday, the San Francisco Chronicle uncovered additional details in a column written by reporters Phil Matier and Andy Ross.

The column revealed that the Chinese spy was Feinstein’s driver who also served as a gofer in her Bay Area office and was a liaison to the Asian-American community.

He even attended Chinese consulate functions for the senator.

Feinstein — who was Chair of the Senate Intelligence Committee at the time — was reportedly mortified when the FBI told her she’d be infiltrated.