Death penalty opponents are using the 25th anniversary of Missouri's resumption of capital punishment to highlight their desire to halt executions.
George Mercer was executed on Jan. 6, 1989, for the 1978 rape and slaying of waitress Karen Keeten in the Kansas City area. Mercer's execution was Missouri's first after a nationwide moratorium on capital punishment was lifted in 1976.
Since then, Missouri has executed 70 inmates.
Death penalty opponents planned a news conference Monday at the Missouri Capitol.