Luke 9:9 New English Translation

⁹Herod said, “I had John^[a] beheaded, but who is this about whom I hear such things?” So Herod wanted to learn about Jesus.^[b]

Luke 9:9 tn Grk “John I beheaded”; John’s name is in emphatic position in the Greek text. The verb is causative, since Herod would not have personally carried out the execution.
Luke 9:9 tn The expression ἐζήτει ἰδεῖν αὐτόν (ezētei idein auton, “was seeking to see him”) probably indicates that Herod, for curiosity’s sake or more likely for evil purposes, wanted to get to know Jesus, i.e., who he was and what he was doing. See I. H. Marshall, Luke (NIGTC), 357. Herod finally got his wish in Luke 23:6-12, with inconclusive results from his point of view.

New English Translation (NET)