Clayton Lockett Execution Timeline

Oklahoma is out of some of the drugs needed for an execution this week. (Photo: Oklahoma Department of Corrections)

Oklahoma is in the international spotlight after the execution of Clayton Lockett did not go as planned. Here is a timeline of Tuesday night's events:

6:23 p.m. - Execution of Clayton Lockett begins.

6:33 p.m. - Lockett declared unconscious.

6:36 p.m. - Lockett starts convulsing.

6:37 p.m. - Witnesses say they heard Lockett say "something's wrong."

6:39 p.m. - Officials lower the blinds and announce a vein failure. Officials say the chemicals did not enter as they were supposed to.

7:06 p.m. - Lockett declared dead of an apparent heart attack.