The deputy involved with a shooting late Thursday night at his home in Pike County was arrested and charged with involuntary manslaughter.
Deputy Joel Jenkins called for help around 11:30 p.m. from his Waverly home, Sheriff Charles Reader said.
In the call to the sheriff department's office line, Jenkins said, " There's been an accidental discharge at my house. My neighbor, he's down. You guys are going to have to get here ASAP. "
40-year-old neighbor, Jason Brady was hit in the head and pronounced dead on the scene, Sheriff Reader said.
The deputy was showing off a gun at the time, Sheriff Reader said.
The weapon " was not his duty gun" issued by the sheriff's office, the sheriff said.
Jenkins was off-duty, and investigators were checking whether or not alcohol found in the home played a role, according to the sheriff.
The Pike County prosecutor, along with Waverley Police also responded to the scene.
No charges have been filed.
Agents from the state Bureau of Criminal Investigation were handling the case, and they obtained search warrants early this morning to go into the home.
Deputy Jenkins was among the officers involved in a shooting that killed a man after a chase in March, Sheriff Reader said.
A grand jury was expected to hear that case next week.
Deputy Jenkins was being placed on paid administrative leave as the death investigation continued, the sheriff said.
A 1:00 p.m. press briefing was planned to update the investigation.
ABC 6 / FOX 28 will continue to update this developing story.