SPENCER (CBS) – Police are searching for a Spencer man accused of stabbing another man in the back with a martial arts sword.

Brendon Jay Unrich is wanted on a charge of assault and battery with a dangerous weapon.

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Nicholas Rudolph. (Image Credit: Spencer Police)

Spencer Police said Unrich stabbed a 26-year-old Lowell man with a Sai sword.

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A sai sword similar to one used in a Spencer stabbing. (Image Credit: Spencer Police)

The victim was taken to UMass Memorial Medical Center with a puncture wound in his back.

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Anyone who sees Rudolph is asked to contact police.