Kings III 16:11

11 And it came to pass when he reigned, when he sat upon his throne,

Kings III 16:11 In-Context

9 And Zambri, captain of half his cavalry, conspired against him, while he was in Thersa, drinking himself drunk in the house of Osa the steward at Thersa.
10 And Zambri went in and smote him and slew him, and reigned in his stead.
11 And it came to pass when he reigned, when he sat upon his throne,
12 that he smote all the house of Baasa, according to the word which the Lord spoke against the house of Baasa, and to Ju the prophet,
13 for all the sins of Baasa and Ela his son, as he led Israel astray to sin, to provoke the Lord God of Israel with their vanities.

The Brenton translation of the Septuagint is in the public domain.