Islamic State of Iraq and Syria (ISIS) fighters have taken the last major oilfield according to the Syrian Observatory for Human Rights (SOHR).
SOHR reported that ISIS fighters captured the Jazal oilfield late Sunday after battle with government forces in the central province of Homs.
Syria-based activist said that they first attacked army camps around the Jazal field, and then attack the oilfield.
The Jazal field is a medium-sized field that in the north west of ancient city of Palmyra, close to Syria’s main natural gas fields and multi-million-dollar extraction facilities.
The founder of SOHR, Rami Abdurrahman said on Monday that all the engineers working in the field moved to the Shaer gas field controlled by government.
ISIS fighters have taken many Syrian oilfields that are mostly in the eastern region near the border of Iraq.
It is estimated that ISIS was earning up to $3 million per day on the black market from its oil sales last year.