Report about heroin and another narcotic (5)
I believe the answer is:
bhang
'narcotic' is the definition.
(I know that bhang is a type of narcotic)
'report about heroin' is the wordplay.
'report' becomes 'bang' (report can mean a loud noise).
'about' is an insertion indicator.
'heroin' becomes 'H' (H is a slang term for heroin).
'bang' enclosing 'h' is 'BHANG'.
'and another' is the link.
(Other definitions for bhang that I've seen before include "Leaves and shoots of hemp" , "cannabis" , "Narcotic used in India" , "Hemp-based narcotic" .)