Eric Ladin and Katy Ladin

Eric Ladin and his wife Katy welcomed their first child.

"Wow! The last 24 hrs have been the best of my life. Forever changed, I am now a father," the former Killing star tweeted.

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According to People, the couple welcomed son Maxfield David Ladin on Friday, Dec. 21 in Los Angeles.

In addition to his role on The Killing, Ladin is also known for his work on Mad Men, Big Love and Generation Kill.