The ISIS has claimed that they have seized a large Syrian military base on the outskirts of the city of Raqqa and have beheaded several captured soldiers.
The militants have released several images of captured soldiers being beheaded, following the clashes. The images have been posted on Twitter by the ISIS media cell members.
BBC, quoting Arabic correspondent Rami Ruhayem, stated that the Raqqa base clashes were a major offensive, which dismisses reports that the ISIS militants and Assad government were collaborating.
The Raqqa base, manned by Division 17 of the Syrian army, is said to have been captured by ISIS militants, following an overnight seige that began on Thursday.