The Libyan army's chief of staff, Mohammed Ali Ahmed Al-Haddad, died in a plane crash on Tuesday after leaving Turkey's capital Ankara, the prime minister of Libya's internationally recognised government said, adding that four others were on the jet as well.

Four other people on business flight that requested emergency landing after takeoff, Turkish interior minister says.

Signal was earlier lost with a jet that took off from Ankara with Gen Mohammed Ali Ahmed al-Haddad and four others on board.