A Coshocton man who attacked a fisherman with a claw hammer along the Muskingum River will spend at least eight years in prison, after a jury convicted him on Nov. 3 and a judge imposed the maximum term at sentencing the same day. Derek R. Tanner, 38, of Coshocton, received an indefinite term of eight to 12 years for felonious assault, according to reporting by the Coshocton Tribune from Coshocton County Common Pleas Court.
Judge Robert Batchelor also ordered 18 months to three years of post-release control, gave Tanner credit for 251 days in local incarceration, and sentenced him to 90 days on a second charge, served concurrently, the Coshocton Tribune reported. Batchelor ordered $1,200 in restitution for fishing equipment the victim said Tanner threw into the river.
The case began Feb. 26, when the 58-year-old victim was fishing behind Downtowner Plaza in Coshocton, according to testimony reported by the Coshocton Tribune. He testified Tanner approached from behind and asked whether he liked swimming. He answered yes, but not in winter, and, feeling uneasy, left for lunch.
When the victim returned to fish at the Blue Hole near the Three Rivers Bridge, Tanner approached again carrying a claw hammer, according to the victim’s testimony as reported by the Coshocton Tribune. The victim testified Tanner threatened to hit him in the head with it and toss him into the river.
The victim testified he drew a Smith & Wesson 9 mm handgun and pointed it at Tanner, but Tanner kept advancing and tried to strike him in the head, the Coshocton Tribune reported. The victim said he blocked the blow, pinned Tanner’s arm, and struck Tanner at least twice with the butt of the gun. The men fell over a bench, injuring the victim’s legs, before the victim separated and called the Coshocton County Sheriff’s Office, according to that testimony.
Deputy Opha Lawson testified deputies found Tanner walking away, ordered him at least twice to stop before he complied, and found the hammer hidden under his clothes, the Coshocton Tribune reported. Tanner, whose face was covered in blood and who had two bumps on his head, was examined by Coshocton County Emergency Medical Services and taken to Coshocton Regional Medical Center, and a blood test obtained by warrant later came back negative for drugs, according to Lawson’s testimony as reported by the Coshocton Tribune.
Tanner was indicted in March on felonious assault, a second-degree felony, and criminal damaging or endangering, a second-degree misdemeanor tied to fishing poles and tackle said to have been thrown into the river, the Coshocton Tribune reported in its earlier trial preview. That preview said Tanner was held in the Coshocton Justice Center on Oct. 30 on a $100,000 bond. The jury deliberated about 30 minutes on Nov. 3 before convicting him on both charges, and sentencing followed immediately.
The victim did not attend sentencing, but Assistant Prosecutor Katelynn Davis read his impact statement, the Coshocton Tribune reported. In it, as quoted by the Coshocton Tribune, he said he once fished three or four days a week but has gone only three times since the attack, and has sought counseling. “I don’t trust my environment fishing anymore,” the victim wrote in the statement quoted by the Coshocton Tribune. “I don’t trust going out and fishing alone, which I have always done.”
Before sentencing, Batchelor noted Tanner had a previous felony assault conviction from 2023 and called the victim’s account chilling, the Coshocton Tribune reported. Defense attorney Marie Wheeler said Tanner had apparent struggles with mental health, and Tanner said only, “He’s the one who hurt me,” according to the Coshocton Tribune. Batchelor told Tanner, in remarks reported by the Coshocton Tribune: “This is an outdoorsman’s worst nightmare, to be out doing something you love and suddenly to be confronted. Those words, ‘do you like to swim,’ said to a man on the bank of a river, at the edge in February, that is a confrontation. That is a threat,” the judge told Tanner, according to the Coshocton Tribune.
What we know — and what we’re still waiting on
Confirmed from the Nov. 3 proceedings reported by the Coshocton Tribune are the verdict, the maximum sentence, the post-release control term, the $1,200 restitution order and the 251 days of credit. Not reported is whether Tanner will appeal, where in the Ohio prison system he will be housed, or any further filings — no such information was in the Coshocton Tribune’s sentencing report, and NewsForce247 will not report such a step until it appears in the court record.
The riverbanks around Coshocton are everyday fishing water, not a remote trailhead: a fishing stop behind a downtown plaza and a well-known spot near the Three Rivers Bridge turned, in testimony, into two confrontations in a single day. Readers can also read about the Coshocton Reentry Coalition’s search for a home for 15-bed second-chance housing, and, for another Southeast Ohio river story, about how Camp Tuscazoar won a $130,805 grant for trail and Tuscarawas River access.
What happens next is the prison term itself: with 251 days of credit applied, Tanner begins serving the sentence imposed Nov. 3, with the 90-day term running concurrently and post-release control to follow. The restitution order also stands. Any appeal or further filing is a matter for Coshocton County Common Pleas Court, and NewsForce247 will update this story if the court record changes.