Islamist rebels have seized the largest oilfield in eastern Syria, according to reports from opposition activists.
A video posted on the internet appears to show rebels in camouflage and black scarves driving a tank under a sign that reads "Euphrates Oil Company – al-Omar field". The speaker said the field was overrun at dawn on Saturday.
Rebels took the oilfield in November last year but were pushed out by government troops.
Syria's oil industry, which exported small amounts of oil until 2011, has been destroyed by the civil war. Oil and gas is still drawn and refined in Syria but the government has had to import oil from Venezuela and Iran. Many Syrians rely on crudely refined oil and rebels have smuggled unrefined oil into Turkey.