The investigation stems from concerns about the overseas source of the drug, .... The seizures started in Georgia, where the Drug Enforcement Administration in March grabbed their supply of sodium thiopental. From there, the DEA swooped into Tennessee, Kentucky and other states to confiscate their stash, forcing the states to either find an alternative chemical or suspend executions.
Dorinda Carter, with the Tennessee Department of Correction, said the state turned over its "entire supply" at DEA request in late March. "They had some concerns about our domestic vendor's import procedures," she said.