Killed and carried out (8)
I believe the answer is:
executed
This clue is a double definition.
'killed' is the first definition.
(executing is a kind of killing)
'carried out' is the second definition.
(I've seen this before)
'and' is the link.
(Other definitions for executed that I've seen before include "Lawfully killed" , "Put to death as punishment" , "Carried out the task or put to death" , "Done (to death?)" , "Beheaded" .)