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Police: Man shot, killed by his brother in Deer Park

Deer Park homicide
Posted at 3:47 PM, Jun 22, 2022
and last updated 2022-06-27 17:32:42-04

DEER PARK, Ohio — A 66-year-old man was found dead from multiple gunshot wounds inside a home in Deer Park on Wednesday, according to Deer Park police.

Police were initially called to the home on Monterey Avenue for a medical alarm activation citing "unknown trouble." When police got there they found Mark Mueller unresponsive and he was confirmed dead by Deer Park fire officials.

Police said they believe the homicide was domestic-related and that there was no overall threat to the public.

Deer Park police said Mark's brother, 70-year-old Michael Mueller, killed his brother and left the scene. Michael Mueller was found dead from a self-inflicted gunshot wound on June 25 after a standoff with a SWAT team in Lexington.

Cincinnati police learned Michael Mueller had a "small arsenal of weapons" at his home in Madisonville, gaining consent from his father to search the home. Police recovered 52 loaded firearms.