The "CSI: Miami" actor will play a sheriff in the comedy, which also stars MacFarlane, Amanda Seyfried, Liam Neeson and Charlize Theron.

CSI: Miami actor Rex Linn has joined the cast of Seth MacFarlane's Western comedy, A Million Ways to Die in the West, currently shooting in New Mexico.

Linn will play a small-town sheriff in the film, which also stars Amanda Seyfried, Liam Neeson, Charlize Theron and Giovanni Ribisi.

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MacFarlane, who directed the raunchy 2012 comedy Ted, is starring in, directing and co-writing the comedy, which follows a sheep farmer who loses his woman after chickening out on a gun duel. He meets a another woman who teaches him how to handle a gun and be more confident. Wellesley Wild and Alec Sulkin penned the screenplay with MacFarlane.

Co-financing with MRC, Universal will distribute the project. It’s scheduled to hit theaters in North America on May 30, 2014.

Linn, who starred as Frank Tripp on CSI: Miami, recently wrapped shooting a role in Devil’s Knot, the highly anticipated film starring Reese Witherspoon and Colin First about the West Memphis Three case. Linn is repped by ROAR.

Email: Rebecca.Ford@thr.com; Twitter: @Beccamford