Longtime broadcaster/MSNBC host Ed Schultz died this morning of natural causes.

RT America, where Schultz was working at the time of his death, issued a statement: “We at RT America are sad to announce the passing of Edward Andrew Schultz,” the network said. “Ed Schultz passed quietly early morning on July 5 at his home in Washington, D.C. This announcement comes as a shock to all of us here at RT America.”

Schultz got his start as a sports broadcaster for Fargo-Moorhead television stations in the early 1980s, including time as sports director at WDAY-TV, which first reported news of his death.

He moved to talk radio as a conservative in the 1990s. He had gravitated to the left by the late 1990s, and by 2004 his The Ed Schultz Show went national.

Schultz became a national figure, however, when he joined MSNBC in 2009. During his tenure there, he hosted The Ed Show weekday afternoons, while also becoming a primetime fixture.

Former MSNBC colleague Keith Olbermann tweeted:

MSNBC dropped The Ed Show from its daytime lineup in July of 2015 in a larger program re-shufflings, ending the run of one of its longest-serving hosts. The following year, he debuted on Kremlin-funded RT America, hosting the half hour News With Ed Schultz.