The Syrian Observatory for Human Rights (SOHR) reported Sunday that more than 800 Syrian regime soldiers were executed or captured by ISIS after the group captured the eastern countryside of Palmyra in Homs Province.
The Observatory said that at least 600 other people are detained by the group, including regime forces, pro-regime militiamen and civilians.
“The number of executions carried out by IS since May 16 until now in Homs has risen to 217, including dozens of civilians of women, men and children,” according to a post on the SOHR’s website.
ISIS began the executions two days after capturing the city of Palmyra, a historic site which contains some of the world’s oldest and best preserved ancient Roman archeological sites.
Syrian state TV SANA said on Sunday that 400 people were killed by ISIS since Palmyra was captured.
“The terrorists have killed more than 400 people including women and children, and mutilated their bodies, under the pretext that they cooperated with the government and did not follow orders,” SANA said, citing residents inside Palmyra.
Meanwhile the Syrian regime on Monday launched at least 15 air strikes on buildings captured by ISIS in Palmyra, according to activists, the Lebanese Daily Star newspaper reported.
ISIS has advanced in Palmyra, taking control over the city of al-Sikhni, the village of al-Amiriyyi, the gas fields of al-Arc, Jazal and al-Hil, the city of Palmyra, al-Sawanah area and the T3 station east of Homs.
“ISIS controls more than 95,000 square km of Syria, which is 50 percent of the country's entire territory,” SOHR said. ISIS currently controls the Syrian city of Raqqa and considers it as the capital of their self-proclaimed “caliphate.”
The group has also been advancing in Iraq and captured Ramadi last week after weeks of fighting. The city of Mosul and most of Tikrit are also under their control.