Saudi and UAE authorities have said little publicly beyond confirming that investigations were underway. Investigators are trying to understand why an Omani copilot stabbed his captain on a FlyDubai flight to Israel. Key points and original sources are listed below.

• Saudi and UAE authorities have said little publicly beyond confirming that investigations were underway. Israeli Prime Minister Benjamin Netanyahu has said the copilot was arrested.S1

• Investigators are trying to understand why an Omani copilot stabbed his captain on a FlyDubai flight to Israel.S2