The New York Times reported that media columnist David Carr died at his office on Thursday. He was 58.

The newspaper’s executive editor Dean Baquet said in a memo to the staff that Carr “died suddenly” after collapsing in the newsroom. No cause of death has been provided.

Baquet called Carr a “remarkable and funny man” who served as a leader in the newsroom. He added that he was their “biggest champion” and that his passion for truth and journalism would be missed by people around the world, people who also love journalism and by his “family” at the newspaper. A staff artist at the Times tweeted that they had “just lost” Carr and that thoughts “are with his loved ones.”

Carr wrote the Media Equation column that was placed in the Monday business section of the Times. Carr’s biography on the New York Times website said that his column focused on the “media as it intersects” with culture, business and government. It also focused on television, digital, print, film and radio issues.  He joined the staff as a business reporter in 2002 and had been covering the media for the past two decades.

Before Carr joined the staff at the Times, he was a contributor for New York Magazine and The Atlantic Monthly. He also wrote a book The Night of the Gun, and it was published in 2008. It is a memoir of addiction and recovery and the use of reporting to fact check past events. The New York Times stated that some of the documents, videos and images he compiled for the book are available online.

This news comes on the heels of other losses the journalism world as suffered this week. On Wednesday, 60 Minutes correspondent Bob Simon was killed in a car crash, and on Tuesday, NBC announced that they would be suspending Brian Williams for six months. National Public Radio media correspondent David Folkenflik tweeted that it has been a “terrible stretch for journalists” and for those who love or care about journalism.