Police said a theft allegedly led to the shooting. A group of homeless people had gathered on Curtis Street.
Halcomb was found by officers the next morning at a Church Street residence and taken into custody without incident.
According to detectives, Halcomb admitted to shooting Riley. Prosecutors said evidence in the investigation included elements pointing to self-defense.
Butler County Prosecutor Michael Gmoser said he could not comment the decision of the grand jury, which is secret, but “everything we had in the investigation was presented to the grand jury, nothing was overlooked.”
He added, “there were a lot of elements considered. Self-defense is one of them and had to be considered.”
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