Officials stopped the lethal injection execution of Clayton Lockett after a new drug was administered. Doctors say Lockett died of a heart attack.
Tommy Lynn Sells was the first inmate to be injected with a dose of newly replenished penobarbital.
New supplier of Texas execution drugs will remain secret for now.
A hearing is scheduled for two Oklahoma death row inmates who are asking for a temporary restraining order to halt their executions pending the outcome of their lawsuit against the Oklahoma Department of Corrections.
The nation’s most active death penalty state is running out of its execution drug.