What does 1 Kings 16:11 mean?

As soon as Zimri became king and sat on the throne, he killed everyone in Baasha’s family. He didn’t leave a single male relative alive, not even distant cousins or friends. 1 Kings 16:11 - Modern Text Bible

(Zimri wipes out Baasha’s entire family line, making sure there’s no one left who could challenge his rule. This is a brutal but common way to secure power in that era.)