Blast in Bsaira, Deir Al Zour kills 20

At least 20 people have been killed and dozens have been wounded Sunday morning due to a car explosion near an oil selling site in Bsaira city, north Deir al-Zour.

 Activists have accused the State of Iraq and al-Sham (ISIS) of carrying out the bombing in response to the ongoing fighting with Islamist rebels and al-Qaeda affiliated al-Nusra Front.

Al-Nusra Front and other Islamist rebel allies have reclaimed control of factories and grain mills in Dier al-Zour, activists said.

While ISIS was once welcomed by rebels battling Syrian President Bashar al-Assad, excessive abuses by the group turned much of the opposition against them.

More than 1,800 people, mostly fighters, died in January fighting between rebels and ISIS, since three massive rebel alliances declared war against ISIS month ago.

Deir al-Zour considers as a key conduit for ISIS to send weapons and fighters from Iraq into Syria.

In relevant development, a commander and military mastermind for the hardline Islamic State of Iraq and Syria (ISIS) rebel group was killed on Saturday after clashes with al-Nusra Front in the eastern province of Deir al-Zour, Al Arabiya News Channel reported activists as saying.

The Libyan commander known as Abu Dajana is ISIS’s chief in Deir al-Zour.

Abu Dajana’s killing comes after Al-Nusra Front and rebel brigades, including the powerful Ahrar al-Sham, launched a new offensive against their former ally ISIS in the eastern province.

 Syria's nearly three-year conflict began as popular protests against four decades of Assad family rule but changed into armed insurgency under a security force crackdown.

Now the major Arab state is in a full-scale civil war that has killed more than 136,000 people and forced over 6 million - more than a quarter of the population - to flee their homes.