ATLANTA (AP) — Georgia announced Tuesday that it is switching immediately to single-drug executions from a three-drug combination, following the lead of several other states even as a death row case loomed.

The Georgia Department of Corrections said it will begin using a single dose of the sedative pentobarbital to carry out court-ordered death sentences. It had been using pentobarbital to sedate inmates before injecting pancuronium bromide to paralyze them and then potassium chloride to stop their hearts.