The family of a 73-year-old Butler County man who was shot and killed by state police in 2018 has filed a wrongful death lawsuit in federal court against the troopers involved and the state police.

The lawsuit, which was filed Monday in the U.S. District Court for the Western District of Pennsylvania, describes the standoff between Walter Wiemann of Renfrew and state police as “a full-scale military-style assault and siege, complete with helicopters and armored vehicles.”

Police were called to Wiemann's house on Nursery Road in Forward Township for reports of a man who reportedly had dementia and was potentially armed. The standoff Sept. 18, 2018, ended when state police said Wiemann aimed a rifle at tactical team members before one of the officers shot him.

District Attorney Richard Goldinger later that year cleared the troopers involved.

Read more in Wednesday's Butler Eagle.