CINCINNATI — A coroner’s report released Tuesday showed new details of vicious violence in the shooting deaths of eight members of a rural southern Ohio family, finding most victims were shot three to nine times each and some of them were bruised. Meanwhile, the hunt for whoever is responsible continued to expand, with more than 200 law enforcement officials involved.

Attorney General Mike DeWine has called the slayings a carefully planned and ‘‘sophisticated operation’’ carried out against eight members of the Rhoden family by one or more killers.

The Hamilton County coroner said the victims — three women, four men and a 16-year-old boy — had wounds to their heads, torso and other parts of the body.

Authorities haven’t suggested a motive or suspects.