However, correction officials decided at the last minute to delay her execution because the lethal injection drug appeared “cloudy,” raising questions about whether it would work properly.

Lawyers for Gissendaner want to know where the drug came from so they can assess whether its use might cause unconstitutional suffering and pain.

Facing a drug shortage, state lawmakers passed a law that barred the government starting in 2013 from releasing any information about where it gets its death penalty drugs.