catch someone red-handed

US /kætʃ ˈsʌm.wʌn ˌredˈhæn.dɪd/
UK /kætʃ ˈsʌm.wʌn ˌredˈhæn.dɪd/
"catch someone red-handed" picture
1.

現行犯で捕まえる, 泥棒を捕まえる

to discover someone in the act of doing something wrong or illegal

:
The police caught the thief red-handed as he was trying to break into the car.
警察は彼が車に侵入しようとしているところを泥棒を現行犯で捕まえた
My mom caught me red-handed eating cookies before dinner.
夕食前にクッキーを食べているところを母に現行犯で捕まえられた