Alice Stewart, a CNN political commentator and veteran political adviser who worked on a number of GOP presidential campaigns, has died at age 58, the news network reported Saturday.

Police in northern Virginia told CNN that Stewart’s body was found outdoors in the Bellevue neighborhood early Saturday morning and that no foul play was suspected. Officials believe Stewart suffered a medical episode, according to CNN.

In an email to staff, the network’s CEO Mark Thompson called Stewart “a very dear friend and colleague to all of us at CNN.”

“A political veteran and an Emmy Award-winning journalist who brought an incomparable spark to CNN’s coverage, known across our bureaus not only for her political savvy, but for her unwavering kindness,” he wrote. “Our hearts are heavy as we mourn such an extraordinary loss.”

No further information about the cause of death or survivors was available Saturday.