$10,000 reward posted in highway shooter case
Motorists travel down Interstate 270 Sunday in Columbus, Ohio, where a woman was shot and killed last Tuesday.
COLUMBUS, Ohio (CNN) -- Businesses in the Columbus area are offering a $10,000 reward for information leading to the arrest and indictment of whoever was responsible for last Tuesday's shooting death of Gail Knisley, the Franklin County Sheriff's Office announced Monday.
The 62-year-old woman is the only casualty from 11 shootings along Interstate 270, which circles Columbus, that began in May.
Knisley was hit by a single bullet as she was being driven on the highway, about 10 miles south of Columbus, to a doctor's appointment. She was taken to a hospital, where she died shortly afterward.
Chief Deputy Steve Martin reiterated his plea to residents to inform authorities of anything that might be suspicious. "Citizens with information, no matter how insignificant it appears, should immediately contact the sheriff's office," he said.
As of Monday, 350 tips had been received, he said. "Investigators continue to pursue each tip as though it may be the one lead to a successful resolution in this case." Martin also repeated his request for the shooter or shooters to contact the sheriff's office, either through a tip line or by mail.
In addition to the Franklin County Sheriff's Office, the investigation includes the FBI, the Bureau of Alcohol, Tobacco and Firearms, the Columbus Police Department and the Ohio State Highway Patrol.
So far, two shells have matched, meaning they came from the same gun, he said.
Other shells appear similar, he added.
Meanwhile, the police presence remained beefed up along Interstate 270.