How was King Ahaziah of Israel injured?

Answer: He fell through a lattice

Ahaziah fell through the lattice of his upper room in Samaria and injured himself.

“Now Ahaziah had fallen through the lattice of his upper room in Samaria and injured himself. So he sent messengers and instructed them: “Go inquire of Baal-zebub, the god of Ekron, whether I will recover from this injury.””— 2 Kings 1:2 (BSB)