A Kansas physician trying to oust three-term Sen. Pat Roberts in the Republican primary is apologizing for posting graphic images of gunshot victims on his Facebook page.
Radiologist Milton Wolf said it was insensitive and inappropriate to have posted the X-ray images and macabre commentary on social media some years ago.
The Topeka Capital-Journal said the X-rays came from various hospitals.
In a statement, Wolf said he removed the images from his Facebook page years ago. He accused Roberts of trying to smear him.
In response, Roberts' campaign said the news report of the incident "speaks for itself."
Several tea party and conservative groups support Wolf.
Roberts has won his past elections handily.