UN Libya envoy Martin Kobler called the attack unprovoked and vicious, saying it “must not push (Libya) into further, serious conflict.”
Libyan commander Khalifa Haftar staged the military parade as his troops fight to secure two last districts in Libya’s second city.
The eastern-based Libyan National Army has been waging a campaign in Libya’s second biggest city for nearly three years.
Eastern-based Libyan National Army has been slowly prevailing against a coalition of Islamists and former revolutionaries.
The eastern government has set up its own National Oil Corporation (NOC) to act in parallel to the Tripoli-based NOC, recognised internationally as the only legitimate seller of Libyan oil.