Alan Colmes, a liberal Fox News commentator, died Thursday at the age of 66.

Fox News announced Colmes’s death Thursday morning, commemorating his life in a segment narrated by Colmes’s former colleague Sean Hannity.

Hannity, in a statement, called Colmes "one of life’s most decent, kind and wonderful people you’d ever want to meet."

The network also confirmed his passing on Twitter.

Fox News contributor @AlanColmes has passed away at the age of 66. pic.twitter.com/14LQUYqJ1I — Fox News (@FoxNews) February 23, 2017

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Hannity worked closely with Colmes, hosting the nightly talk-show "Hannity & Colmes" together from 1996 to 2009. The show saw Colmes present a liberal view on politics that was often at odds with Hannity's more conservative positions.

In a statement, Colmes's family said he had experienced a "brief illness" before his death.

“Alan Comes passed away this morning after a brief illness. He was 66 years old. He leaves his adoring and devoted wife, Jocelyn Elise Crowley,” Colmes’s family statement said.

Colmes mentioned on his website in late January that he would be occasionally missing his show to “deal with a medical issue.”

Colmes also hosted the radio show "The Alan Colmes Show” and authored "Red, White & Liberal: How Left Is Right and Right Is Wrong" in 2003 and "Thank the Liberals for Saving America" in 2012.

Colmes's Fox News colleagues expressed respect and admiration for him.

“Despite major political differences, we forged a deep friendship,” Hannity’s statement adds.

“A wonderful man,” Bill Hemmer, a Fox News anchor, tweeted.

Colmes is also the second Fox News personality death in less than a week, passing away days after Brenda Buttner, who had cancer.