US billionaire David Koch dies at age 79

Washington - He was a generous donor to conservative political causes.

David H Koch, executive vice president of Koch Industries Inc. and a long-time philanthropist, has died at age 79.
His older brother, Charles, the death on Friday, saying, "It is with a heavy heart that I now must inform you of David's death."
David Koch, a billionaire who lived in New York City, was the Libertarian Party's vice presidential candidate in 1980. He was a generous donor to conservative political causes as well as educational, medical and cultural groups.
The Koch brothers were best known for a vast political network they built that became popularly known as the "Kochtopus" for its far-reaching tentacles in support of conservative causes. The brothers founded the anti-tax, small government group Americans for Prosperity.