Police say they have a suspect in custody in the tragic killing of an Ohio police officer.

FOX's Jeff Monosso reports:

Police say the suspect Herschel Jones went hunting for a cop to kill late last night in Danville, Ohio. A town of about a thousand Northeast of Columbus where police were tipped off by Jones' ex-girlfriend of his intentions.

But dispatch was unable to make contact with Officer Thomas Cottrell, who a short time later was found shot to death. Jones was later caught after a chase.

Charges are pending as the State Police Union calls the officer's killing a reminder of how dangerous the job is.

In Chicago, Jeff Monosso, FOX News.