Dianne Feinstein, a long-serving Democratic U.S. senator from California and gun control advocate who spearheaded the first federal assault weapons ban and documented the CIA¡¯s torture of foreign terrorism suspects, has died at 90, a source familiar with the news said Friday.

Feinstein¡¯s office did not immediately respond to a request for comment on the news, first reported by the Punchbowl news outlet.

Feinstein was a Washington trail-blazer who among other accomplishments became the first woman to head the influential Senate Intelligence Committee.