The victim's wife made the gruesome discovery just after 1 p.m. Wednesday at their home on Poplar Street in Yorktown.
The body of 43-year-old Piotr Seweryn was found in the basement.
Investigators do not believe the shooting was random, but they are reaching out to neighbors, hoping they can provide some answers.
Seweryn sold used cars for a living and lived at the house his wife and two children.
The last murder in Yorktown was about 20 years ago.