By Graham Lee Brewer Staff Writer gbrewer@oklahoman.comMedical examiner reports on five men executed in Oklahoma in 2014 and 2013 show no indication of a recent drug mix-up that has led to a halt on all lethal injections in the state. All executions in the state have been put on hold while officials investigate why the drug, potassium acetate, was used to execute Charles Frederick Warner in January and almost used on Richard Eugene Glossip last month before his lethal injection was called off. This drug is not part of the three-drug lethal injection protocol in Oklahoma.Read more on NewsOK.com