Investigators say it happened last month at the 65-year-old man's home in Longswamp Township, sometime between March 15 and March 30.
Trooper Stephen M. Penkala II tells The Reading Eagle that the person went into the man's home and fatally beat the duck. Police say the man reported someone had also tried to set fire to a tractor-trailer and another vehicle at his home.
The name of the victim hasn't been released. Police say the investigation is continuing.
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Information from: Reading Eagle, http://www.readingeagle.com/