Five fighters from the newly formed Derna Protection Force(DPF) - Derna Shura Council previously - were killed and others were injured as the local Derna forces withdrew from Heela district in a renewed intense fighting on Tuesday, reported the DPF.

DPF told reporters that their forces had to pull out from the Heela as heavy Air Force attacks were targeting them, saying the air attacks were by "foreign aircraft."

Meanwhile, medical sources from Qubbah Hospital said they had received deaths and injuries from the forces of the self-styled army led by warlord Khalifa Haftar, who in recent days ordered the advance on Derna for allegedly fighting "terrorists."

Italian aircraft movement depicter, ItaMilRadar, in the meantime, showed Tuesday on its database a picture of a UAE Beech B-350 aircraft and said it entered Tuesday Libyan airspace to do ISR mission over east Libya.

Derna has been besieged by the self-styled army of Khalifa Haftar for over a year disallowing the residents basic needs amid resistance by the Derna Shura Council fighters.