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LOS ANGELES (CNN) — Andrew Breitbart, a well-known conservative blogger, has died, his attorney confirmed Thursday. He was 43.

Breitbart was also known as a talking head on conservative television shows as well as the right-hand man to Matt Drudge of Drudge Report.

An In Memoriam post on his website breitbart.tv said that it was with a “terrible feeling of pain and loss” that they announces his death.

“Andrew passed away unexpectedly from natural causes shortly after midnight this morning in Los Angeles,” the post said.”We have lost a husband, a father, a son, a brother, a dear friend, a patriot and a happy warrior. Andrew lived boldly, so that we more timid souls would dare to live freely and fully, and fight for the fragile liberty he showed us how to love.”

According to the post, in a new conclusion to one of his books, “Righteous Indignation,” he wrote about how much he loved his job and fighting for what he believed in.

“Andrew is at rest, yet the happy warrior lives on, in each of us,” the post stated.