Abigail Ochse and A.J. Buckley

CSI: NY star AJ Buckley is expecting his first child with fiancée Abigail Ochse.

Ochse, an oncology nurse, is five months pregnant with a baby girl, the couple announced Tuesday. The child is expected in early 2014.

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Buckley played Adam Ross on the CBS procedural and will next appear in the film North of Hell, alongside Patrick Wilson and Katherine Heigl, which he also produced.