Tel Aviv, Sept. 30 -- A flydubai flight travelling from Dubai to Tel Aviv landed at Tabuk airport in Saudi Arabia on Wednesday after declaring an emergency mid-flight, with a hijacking reportedly ruled out.

The incident happened appeared to have been triggered by an altercation between the pilots, according to Israeli security sources cited by The Times of Israel.

The aircraft initially transmitted squawk code 7700, the international emergency code, before switching to code 7500, which indicates a hijacking or other form of unlawful interference, according to flight-tracking data cited by the newspaper.

The 7500 signal prompted Israeli Air Force fighter jets to scramble toward the aircraft, Israeli security sources said.

The plane carry...