Islamic State fighters have reportedly executed 250 Syrian soldiers after capturing the Taqba air base in the northeastern part of the country.

In this latest video, first posted to a social website, fighters can be heard jeering at their hostages, referring to them as sheep and ordering them to keep moving.

IS fighters seized the Tabqa air base on Wednesday, posing on top of aircraft , brandishing weapons....and taking prisoners.

Later, they are heard interrogating one of their captives..

The exchange ends with the fighters saying --- We will return you to Hell, God willing. We will cut your throat."

..and then, apparently, the killing began.

The final video shows lines of dead bodies, at least 135 of them. The group claims they killed a total of 250 soldiers after capturing the base which was the government's last foothold in the militant controlled region.

Sign up to our free newsletters

Get the best updates straight to your inbox:
Please select at least one mailing list.

You can unsubscribe at any time by clicking the link in the footer of our emails. We use Mailchimp as our marketing platform. By subscribing, you acknowledge that your information will be transferred to Mailchimp for processing.