Andrew Breitbart died of heart failure stemming from coronary disease, this according to the L.A. County coroner's office.
A spokesman for the coroner's office says there were minute traces of alcohol in his system, but has ruled no foul play and closed the case.
The conservative blogger -- who founded the popular news site Breitbart.com -- died March 2 at UCLA medical center after collapsing near his Brentwood home.
He is survived by his wife and four children. He was 43.