Greek

καὶ εὐθὺς ἀποστείλας ὁ βασιλεὺς σπεκουλάτορα ἐπέταξεν ἐνέγκαι τὴν κεφαλὴν αὐτοῦ ἀπελθὼν ἀπεκεφάλισεν αὐτὸν ἐν τῇ φυλακῇ

Transliterated

kai euthys aposteilas ho basileus spekoulatora epetaxen enenkai tēn kephalēn autou apelthōn apekephalisen auton en tē phylakē

Literal English

And immediately having sent - King an executioner he commanded to be brought the head of Him’” having gone he beheaded him in the prison
Bible Hub

Definitions