▁further ▁appe als . ▁Johnson ▁wa ived ▁his ▁appe als , ▁speed ing ▁up ▁his ▁own ▁execution . ▁Federal ▁public ▁def enders ▁twice ▁sought ▁to ▁interven e ▁in ▁the ▁case ▁without ▁Johnson ' s ▁consent . ▁They ▁argued ▁Johnson ▁was ▁ment ally ▁in comp et ent , ▁but ▁a ▁state ▁judge ▁concluded ▁he ▁was ▁not . ▁ ▁Johnson ▁was ▁executed ▁by ▁le th al ▁injection ▁on ▁April ▁ 2 0 , ▁ 2 0 1 2 , ▁at ▁the ▁James ▁T . ▁V aug hn ▁Cor re ction al ▁Center . ▁ ▁Due ▁to ▁capital ▁pun ishment ▁being ▁abol ished ▁in ▁Del aware , ▁Johnson ▁remains ▁the ▁last ▁ever ▁person ▁to ▁be ▁executed ▁by ▁the ▁state . ▁ ▁See ▁also ▁▁ ▁Capital ▁pun ishment ▁in ▁Del aware ▁ ▁Capital ▁pun ishment ▁in ▁the ▁United ▁States ▁ ▁List ▁of ▁people ▁executed ▁in ▁Del aware ▁ ▁List ▁of ▁most ▁recent ▁execution s ▁by ▁juris diction ▁ ▁List ▁of ▁off enders ▁executed ▁in ▁the ▁United ▁States ▁in ▁ 2 0 1 2 ▁ ▁References ▁▁ ▁Category : 1 9 8 3 ▁birth s ▁Category : 2 0 1 2 ▁death s ▁Category : American ▁murder ers ▁Category : 2 1 st - century ▁American ▁crim inals ▁Category : 2 1 st - century ▁execution s ▁by ▁Del aware ▁Category : 2 1 st - century ▁execution s ▁of ▁American ▁people ▁Category : 2 0 0 6 ▁mur ders ▁in ▁the ▁United ▁States ▁Category : American ▁people ▁conv icted ▁of ▁murder ▁Category : Pe ople ▁conv icted