CLEVELAND -- The U.S. Marshals Service is taking their investigation to highway drivers.
The billboard notices have been instrumental in finding fugitives and missing persons since they first implemented the program.
Investigators say they will need to rely on the eyes and ears of the public to find the murder suspect.
Summerfield is charged with the brutal death of his estranged girlfriend Lynn Jackenheimer. She was strangled, then stabbed. Her body was found Saturday on Hatteras Island in North Carolina.
Related story: Arrest warrant issued for Lynn Jackenheimer's estranged boyfriend
The billboards will include a photo, description, and the number to call and text if you spot him.
"Everybody leaves a trail and they leave a string behind that connects all the dots and this guy is doing the exact same thing. We will catch him," U.S. Marshal Pete Elliott said.
On Wednesday morning, a caller reported seeing Summerfield in Columbus.
That's the second tip call there in the last 24 hours.
The first was a motorist who says she saw him trying to change license plates on his car in an apartment complex. He reportedly fled the scene.