Conservative writer and website publisher Andrew Breitbart died of natural causes at Ronald Reagan UCLA Medical Center about midnight, sources told The Times.
The exact cause of death was unclear, said the sources, who spoke on the condition of anonymity because the case was ongoing.
It's also unclear if he was stricken at the hospital or another location.
"Andrew passed away unexpectedly from natural causes shortly after midnight this morning in Los Angeles," Breitbart.com said. "We have lost a husband, a father, a son, a brother, a dear friend, a patriot and a happy warrior. "
I hope it was slow and painful.