Ohio inmate Dennis McGuire appeared to gasp and convulse for roughly 10 minutes before he finally died Thursday during his execution by lethal injection using a new combination of drugs, reports CNN.
He was convicted in 1994 of the rape and murder of 22-year-old Joy Stewart, who was seven months pregnant. Her relatives were at Southern Ohio Correctional Facility in Lucasville to witness his death, according to tweets from television reporter Sheila Gray.
The execution generated controversy because, like many states, Ohio has been forced to find new drug protocols after European-based manufacturers banned U.S. prisons from using their drugs in executions -- among them, Danish-based Lundbeck, which manufactures pentobarbital.
The state used a combination of the drugs midazolam, a sedative; and the painkiller hydromorphone, according to the state corrections department.