Supreme Court allows US state to proceed with execution of Marcellus Williams

This photo provided by the Missouri Department of Corrections shows Marcellus Williams (Missouri Department of Corrections/AP)

The Supreme Court has allowed the US state of Missouri to proceed with its plan to execute death row inmate Marcellus Williams, rejecting a last-ditch request to intervene on his behalf.

The justices rejected two separate appeals to spare Williams’ life, over the objection of the three liberal justices.