SPRINGFIELD, Mo. -

The state of Missouri plans another execution this week. Local death penalty opponents will again take to the streets of Springfield to protest against capital punishment.

The local chapter of Missourians for Alternatives to the Death Penalty will hold a protest vigil Tuesday from Noon to 1 p.m. on Park Central Square. The vigil also includes a remembrance of victims of violent crime.

The event is one of nine planned around the state, urging officials to stop executing convicted killers. If this execution takes place, it would be the seventh in as many months, starting last November. Opponents argue the source and quality of the lethal injection drugs used continues to remain secret.

Death row inmate Russell Bucklew is scheduled to die by lethal injection Wednesday for a 1996 murder in Cape Girardeau County. His attorneys say he has a vascular condition which medical experts argue greatly increases the risk of a painful botched execution, such as the one that took place in Oklahoma last month.

The state also has also set an execution date for a death row inmate in June. Governor Jay Nixon says he has confidence in the process in Missouri, and has so far decline to stop any scheduled executions.