Your post motivated me to google... Wikipedia has a list of uses of meteoric iron dating to 2.5k BC and earlier:
https://en.m.wikipedia.org/wiki/Meteoric_iron
The earliest dagger listed there seems to come from the Hattian people of Anatolia:
https://en.m.wikipedia.org/wiki/Hattians
It sounds like they were a pre-Indo-European group later absorbed/conquered by the Hittites...