On Tuesday, Ohio prison officials executed a man with a single drug instead of the three that have been used for lethal injection since the 1970s, according to The Riverfront Times.
The inmate, 51-year-old Kenneth Biros, was executed with a five gram quantity of sodium pentathol and was pronounced dead at 11:47 a.m. on Tuesday, according to the RFT.
The new drug has been previously used euthanize animals and is said to be painless, according to the New York Times.
Proper testing has not yet been completed though, and some opponents argue the execution of Biros ranged into human experimentation, according to the Times.
Biros was found guilty of sexually assaulting and murdering Tami Engstrom, 22, in 1991 in Northeastern Ohio, according to the Times article.