25 June 2018 :

23 July 2017: a group of 18 suspected fighters of the Islamic State of Iraq and the Levant group have been executed, shot point blank in the back of the head, by the forces of General Khalifa Haftar in Libya. Mahmoud al-Werfalli, the senior leader of Haftar's forces, is seen reading the charges and carrying out an execution himself in a new video posted online on Sunday. It is believed the executions were carried out on July 17. 
On July 18, the United Nations called for Haftar's Libyan National Army (LNA), which controls the eastern part of Libya, to investigate summary executions of prisoners. 
Reports of the executions come as the leaders of Libya's rival factions were planning to meet in Paris on Tuesday to discuss a deal to end the political crisis
General Haftar's forces have gained control in much of Libya's east, with backing from the United Arab Emirates and Egypt.

(Source: 23/7/2017; https://www.aljazeera.com/news/2017/07/isil-fighters-executed-haftar-forces-libya-170723180122413.html)