They clearly saw the man who attacked them, yet they mistakenly identified an innocent person.

他们清楚地看到了袭击他们的人，但却错误地指认了一个无辜的人。

youdao

The gangster stabbed an innocent person to death.

歹徒扎死了一名无辜者。

《新英汉大辞典》

The risk of hanging an innocent person is too great, they say.

他们说绞死一个无辜的人的可能性实在太大了。

youdao

In the same way, evidence must be designed perfectly if it is to frame an innocent person to make him or her seem guilty.

VOA: special.2010.02.21

People thought it was just wrong, categorically wrong, to kill a person, an innocent person, even for the sake of saving five lives.

他们认为杀掉一个无辜的人，是绝对错误的，哪怕是为了拯救五条生命。

耶鲁公开课 - 公正课程节选

To frame someone is to create false evidence to make an innocent person seem guilty.

VOA: special.2010.02.21

The fear that an innocent person might be executed has long haunted jurors and lawyers and judges.

NEWYORKER: Trial by Fire

Mr Sandel illustrates the old classroom chestnut is it ever right to kill one innocent person to save the lives of several others?

ECONOMIST: First principles of justice

In 2005, when a solid majority preferred the death penalty, 59% believed that an innocent person had been executed within the previous five years.

CNN: Executions, death sentences remain steady over past year