“Caught red-handed”in other languages

Same idea, different pictures

English points to blood still on the hands: the phrase grew out of old Scottish law, where a “red hand” meant catching an offender in the act.

Greek is caught in the leeks, πιάστηκε στα πράσα, like a thief in a vegetable patch. Swedish has its beard caught in the mailbox, skägget i brevlådan: lean in to peek through the slot and you're stuck there, guilty and embarrassed.