Three US states Tennessee, Alabama and Oklahoma are scheduled to carry out executions on the same day, marking the first time since 2010 that three people are put to death in separate US states on the same day.
The three prisoners, who were convicted of murder and sentenced to death, are scheduled to be executed by lethal injection on Thursday.
The unusual concentration of executions has renewed debate over the use of the death penalty in the United States, where its application varies significantly from one state to another.
The planned executions also come as the number of executions in the US has risen in recent years, with a relatively small number of states accounting for most of them.