"Thief!"

Translation: 도둑!

[IRTC1015]

You won't scream just "도둑!" in Korean. Instead, say "도둑이야!" (lit. It's a thief!) or "도둑 잡아라!" (lit. Catch the thief!)

[TesterK_Suika]

도둑이다! can be used as well, but the person usually says "저놈 잡아!" eoughly meaning CATCH HIM

[fbr_brazil]

PEGA LADRÃO!