At least 10 people were killed and 27 wounded in armed clashes between two security forces near the Libyan capital Tripoli, an official said on Friday.
Fighting took place in the Ain Zara region late on Thursday night between units of the Presidential Council's security force and the Special Deterrence Force, or RADA.
Osama Ali, a spokesman for Libya's Ambulance and Emergency Services, said the deaths include one child, with casualties feared to rise as reports come in from other hospitals in the area.
Meanwhile, air traffic at Tripoli's main Mitiga airport has been suspended due to the clashes, a security source at the airport told Anadolu Agency on condition of anonymity as he is not authorized to speak to media.
The Libyan military's 444 Brigade intervened to stop the fighting and took up positions in several areas where the clashes took place, according to an Anadolu Agency reporter.
A Presidential Council statement called on both sides to cease hostilities, adding that government and military prosecutors will conduct investigations.
Oil-rich Libya has remained in turmoil since 2011 when longtime ruler Muammar Gaddafi was ousted after four decades in power.
The situation has worsened since March when the Tobruk-based House of Representatives appointed a new government led by former Interior Minister Fathi Bashagha.
Source: Anadolu