After a nearly nine-month delay prompted by a botched lethal injection last spring, Oklahoma plans to execute a death row inmate Thursday with the same three-drug method Florida intends to use about an hour earlier.

A condemned Ohio inmate put to death during a prolonged execution experienced pain and suffering before he lost consciousness, an anesthesiologist determined in a report released Tuesday.

Witnesses say convicted killer Joseph Wood gasped hundreds of times after the lethal injection was administered in Arizona Wednesday.