A former executive director of the Colorado Republican Party, Sean Murphy, passed away Monday of natural causes at his home in the Washington, D.C. area.

Murphy served as the party’s director from 1999 through 2002, and was also the former chief of staff for Bob Beauprez for four years.

A native of Colorado and a graduate of the University of Colorado Boulder, Murphy also served as campaign manager for Bob Schaffer’s 1995 campaign.

He is survived by his wife and three children.

Murphy has worked for U.S. Rep. Tom Cole of Oklahoma for the past decade. Cole announced the sudden death Monday night in a statement.

“It is with great sadness that I announce the loss of my Chief of Staff, Sean Murphy,” said Cole. “Sean passed suddenly of natural causes.”

“It is impossible to overstate how much my staff and I will miss Sean. He was a devoted husband, a loving father and the best Chief of Staff any Member of Congress could ever have. A skilled Colorado political operative before he became a congressional staffer, Sean worked with my classmate and good friend Bob Beauprez for four years, and then joined my staff in 2007. Sean was much more than just an enormously capable Chief of Staff. He was a wise counselor, a good friend and a generous mentor to dozens of people who have worked in my congressional office and my political campaigns. He will be missed by all who knew him, but especially me.”

Rest in peace, Sean.