In the fiftieth year of Azariah king of Judah, Pekahiah son of Menahem became king of Israel. He ruled in Samaria for two years.
In God's eyes he lived an evil life. He stuck to the old sin tracks of Jeroboam son of Nebat, who led Israel into a life of sin.
And then his military aide Pekah son of Remaliah conspired against him - killed him in cold blood while he was in his private quarters in the royal palace in Samaria. He also killed Argob and Arieh. Fifty Gadites were in on the conspiracy with him. After the murder he became the next king.
The rest of the life and times of Pekahiah, everything he did, is written in The Chronicles of the Kings of Israel.