Kenneth Biros (June 24, 1958 – December 8, 2009) was an American convicted murderer who was sentenced to death and executed for the aggravated murder, attempted rape, aggravated robbery and felonious sexual penetration of a young woman. Biros was the first condemned person to be executed by lethal injection in the United States with the use of a single drug, setting a Guinness World Record.
|Born||June 24, 1958|
|Died||December 8, 2009 (aged 51)|
|Cause of death||Execution by lethal injection|
Felonious sexual penetration
|Criminal penalty||Death sentence (October 29, 1991)|
Biros admitted to killing 22-year-old Tami Engstrom during February 1991 in a fit of rage. Biros then cut up the body and spread numerous parts over a wide territory encompassing portions of northeast Ohio and northwest Pennsylvania.
Biros was convicted of aggravated murder, attempted rape, aggravated robbery and felonious sexual penetration and sentenced to death. He was originally sentenced to die by means of lethal injection at 10:00 a.m. on March 20, 2007. This would have been the first execution during Governor Ted Strickland's administration. Governor Strickland denied Biros clemency on March 16, 2007. However, on that day the Supreme Court of the United States upheld the ruling of the 6th U.S. Circuit Court of Appeals that Biros' execution should be stayed to allow him to continue to argue his case that Ohio's lethal injection is cruel and unusual punishment. He was then transferred from Ohio's death row at the Ohio State Penitentiary in Mansfield to the Southern Ohio Correctional Facility in Lucasville. On April 24, 2009, Trumbull County Prosecutor Dennis Watkins requested the Ohio Supreme Court to set an execution date after a federal judge decided on Tuesday, April 21, 2009, that Ohio's execution method was flawed, but not unconstitutional. The Supreme Court of Ohio later set a new execution date for December 8, 2009.
Biros was executed by lethal injection on December 8, 2009 at 11:00 a.m. at the Southern Ohio Correctional Facility in Lucasville, Ohio. His execution was originally scheduled for 10:00 a.m., but was later delayed until 11:00 a.m.. He was pronounced dead at 11:47 a.m.. Biros was the first condemned person to be executed with a lethal single-drug dose of an anesthetic, sodium thiopental, in America. 
- First judicial single drug execution:
Kenneth Biros (USA), a 51-year-old prisoner convicted of murdering a 22-year old woman in 1991, was executed in Ohio, USA, using a single large injection of anaesthetic. It is the first time that a single injection has been used in legal, judicial executions in a democratic state.
- "ABC News: Supreme Court Blocks Ohio Execution". abcnews.go.com. Retrieved 2008-01-14.[dead link]
- Biros Executed; First Death Using New Method Archived 2009-12-13 at the Wayback Machine