DES MOINES, Iowa (AP) — The parents of a man who died after being shot with stun guns by Worth County deputies have filed a lawsuit.

The lawsuit by Larry and Cheri Zubrod of Chickasaw County was filed Wednesday. It says the deputies "punitively and sadistically" used excessive force in subduing their son, 39-year-old Michael Zubrod. The Northwood man was subjected to several stun gun jolts from deputies responding to a domestic dispute on Sept. 22, 2013. Deputies say Zubrod was using a hammer to hit his girlfriend.

Zubrod stopped breathing at the scene and was pronounced dead at a Mason City hospital.

Worth County Attorney Jeffery Greve later cleared the deputies.

Sheriff Jay Langenbau and the county were named in the lawsuit. Greve and Langenbau declined to comment about the lawsuit.

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