CBS Evening News anchor John Dickerson has abruptly announced his exit after 16 years with the network.

“Local news: At the end of this year, I will leave CBS, sixteen years after I sat in as Face the Nation anchor for the first time,” Dickerson, 57, wrote via Instagram on Monday, October 27. “I am extremely grateful for all that CBS gave me — the work, the audience’s attention and the honor of being a part of the network’s history — and I am grateful for my dear colleagues who’ve made me a better journalist and a better human. I will miss you.”

Dickerson did not provide a reason for his departure, nor did he mention any plans for the future.

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