Quisling; split like QUIT+LINK means a culprit quits and collaborate (link)with enemy
Quislings are prone to QUIZZLINGS by the government when caught!
Quisling sounds like sibling who aids betraying
Quisling, after Norwegian politician Vidkun Quisling, who assisted Nazi Germany to conquer his own country and ruled the collaborationist Norwegian government, is a term used to describe traitors and collaborators.
the culprit was questioned(QUIZ)...who is the TRAITOR in (LINGuistic department)who helped him to leak out the paper.
"quisling" == actually sounds like "wrestling" , ie "traitors" are always in a mood to wrestle with you
QUISLING -> CHRIST + LYING. In the Bible, Judas was caught LYING to CHRIST as he plotted to betray him.
quis+ling ; quis sounds like wise/cunning person
quisling = quis + ling; quit link i.e. quit the link is always a betrayer.