“I believe in the death penalty for certain crimes. But that is not an acceptable way of carrying it out. And people who were responsible should be held responsible,” he said in an interview. “The lethal injection needs to be an indeed lethal injection and not the bollocks-upped situation that just prevailed. That’s torture.”

Wood was given a toxic mix of chemicals that took nearly two hours to kill him on Wednesday, according to The Arizona Republic, whose reporter said Wood “gulped like a fish on land” for 90 minutes.

Executions in Ohio and Oklahoma have also gone awry this year, prompting renewed scrutiny of the practice by politicians and the media. The manufacturer of a key chemical previously used in the lethal mixture has stopped production, which has led states to experiment with a different mix.