Cecil ##son was executed by lethal injection at 9.13pm on Tuesday for the 1996 murder of Deputy Sheriff Christopher Castetter . Last meal was fried chicken , mashed potatoes , corn , green beans and cola . An hour earlier , the U.S. Supreme court had denied an appeal by his attorneys who claimed their client had diminished mental capacity . In 1972 , 24 years before he shot dead a police officer , Clayton suffered a sawmill accident that speared a shard of wood into his head . Doctors were forced to remove 20 per cent of his frontal lobe , around eight per cent of his total brain mass . His lawyers argued that Clayton did n't understand his death sentence . A doctor from Missouri department of Mental Health had previously concluded that he did deserve the punishment .
Cecil Clayton was executed by lethal injection at 9.13pm on Tuesday for the 1996 murder of Deputy Sheriff Christopher Castetter . Last meal was fried chicken , mashed potatoes , corn , green beans and cola . An hour earlier , the U.S. Supreme Court had denied an appeal by his lawyers who claimed their client had diminished mental capacity . In 1972 , 24 years before he shot dead a police officer , Clayton suffered a sawmill accident that speared a shard of wood into his head . Doctors were forced to remove 20 per cent of his frontal lobe , around eight per cent of his total brain mass . His lawyers argued that Clayton did n't understand his death sentence . A doctor from Missouri Department of Mental Health had previously concluded that he did understand the punishment .