flagrante delicto
[ fluh-gran-tee di-lik-toh ]
/ fləˈgræn ti dɪˈlɪk toʊ /
adverb
Law.
in the very act of committing the offense.
while having illicit sex with someone.
Also
in flagrante delicto,
in flagrante.
Origin of flagrante delicto
< Latin: literally, while the offense is (still) burning