suçüstü yakalanmış olmak

listen to the pronunciation of suçüstü yakalanmış olmak
Türkçe - İngilizce
(Askeri) caught in the act
To be found doing something that you weren't supposed to be doing, while you're doing it

Previously, he blamed his brother for drawing on the walls but when he was caught in the act, he could deny it no longer.