Kings III 16:9

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.

Kings III 16:9 In-Context

7 And the Lord spoke by Ju the son of Anani against Baasa, and against his house, all the evil which he wrought before the Lord to provoke him to anger by the works of his hands, in being like the house of Jeroboam; and because he smote him.
8 And Ela son of Baasa reigned over Israel two years in Thersa.
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,

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