The jury decides
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Boston bombing: Jury's death penalty checklist explained

A jury in Boston is currently deliberating whether Dzhokhar Tsarnaev should be put to death for the Boston Marathon bombing in 2013.

Tsarnaev has already been convicted on 30 separate charges, 17 of which can carry the death sentence.

The members of the jury must follow a detailed checklist to decide if the crimes he committed meet the standards - if not, Tsarnaev will be sentenced to life in prison.

The BBC's Gary O'Donoghue spoke to law professor Daniel Medwed about how the process works.