11:39 AM PT -- Sources with direct knowledge tell TMZ William Friedkin died from pneumonia.
William Friedkin, the famed filmmaker who directed "The Exorcist," has died.
The news was confirmed Monday by his wife, Sherry Lansing, who says he passed in L.A. -- but the exact details of his death have yet to be revealed. It's a big hit to the film community -- as Friedkin was an influential force behind some of the 20th century's most iconic movies.
While he might best be remembered for his work on the 1973 horror flick -- which, by all accounts, changed the genre forever -- WF had several other notable credits to his name ... including the Oscar-winning "French Connection," which he also directed.
Other films he helmed included ... "The Brink's Job," "Sorcerer," "Cruising," "To Live and Die in L.A.," "Rampage," "Deal of the Century," "The Guardian," "Blue Chips," "12 Angry Men," "Rules of Engagement," "The Hunted," "Killer Joe" and lots of others.
He also directed a handful of episodes for memorable TV shows ... like "Tales from the Crypt," "The Twilight Zone," "Rebel Highway," "The Alfred Hitchcock Hour," "CSI" and more.
Friedkin was a diverse director ... dabbling in all types of flicks, from horror to drama, and even comedy. While some of his work is more well-known than others, he was respected in all regards -- and certainly carved out his own corner in pop culture.
The last time we saw him, he was out here in L.A. signing autographs and talking "Get Out."