COLUMBUS, Ohio (WTVN) -- A final report on the execution of Dennis McGuire claims there is no evidence that the inmate experienced any "pain, distress, or anxiety" during the 26-minute long execution.

Witnesses of the January 16 execution reported seeing McGuire appear to be gasping for air shortly after a lethal two-drug combination of midazolam and hydromorphone were injected.

The report says that due to the large dose of drugs McGuire was given he was unconscious before any "irregular bodily movements were observed."

Still, the Ohio Dept. of Rehabilitation and Corrections says it will increase the dosages of the lethal drugs for future executions. The revised policy increases the dosages of midazolam from 10 mg to 50 mg and hydromorphone from 40 mg to 50 mg.

"After the review, the Department remains confident that it conducted the execution in a humane, constitutional way and that the inmate was completely unconscious and felt no pain. After speaking with the Department's medical expert, examining other states' practices and considering the recommendations of the inmate's medical expert, the Department finds no harm in increasing the dosage levels of its drugs and has notified Judge Frost of this revision," said spokesperson JoEllen Smith.

McGuire's family has filed a federal lawsuit to block Ohio from using the same two-drugs in future executions.

Gregory Lott had been scheduled for execution in March, but Gov. John Kasich pushed that execution back to November to allow DRC more time to review McGuire's execution.

The next execution is May 28 when Arthur Taylor of Cuyahoga County is scheduled to die for a 1983 shooting during a robbery.