First inmate execution in Oklahoma in six years

For the first time in six years, the U.S. state of Oklahoma executed a prisoner. 60-year-old John Marion Grant received a lethal injection for stabbing a prison canteen worker in 1998.

Grant served a prison sentence for several armed robberies at the time of the stabbing. He put the canteen worker in a storage room 16 times using a homemade weapon. He was sentenced to death in 1999.

He is the first death convict to have a fatal injection since several executions went wrong. For example, almost the wrong remedy was administered to a prisoner in 2015 and an execution failed in 2014.

Over the past few years, Oklahoma has investigated whether the manner of execution should be changed, but ultimately the state has chosen to use the same lethal injections as it did in the past.