File - This Oct. 9, 2014 file photo, shows an arm restraint on the gurney in the the execution chamber at the Oklahoma State Penitentiary in McAlester, Okla. Problematic executions in Oklahoma, Arizona and other states have highlighted a patchwork approach that states now take with lethal drugs, with types, combinations and dosages varying widely. (AP Photo/Sue Ogrocki, File)

4 Ohio inmates challenge lethal injection drug law

The lawsuit claims that the law violates inmates’ free speech rights by concealing the identities of those to whom they would like to direct their messages about the death penalty. They also contend it restricts information that helps inform the public debate over capital punishment.