At least 200 people are reported missing after a suspected attack by the so-called Islamic State (IS) on a cement factory near Damascus.
Workers were reportedly taken from a dormitory where they were staying on the outskirts of the town of Dumeir.
A factory administrator said no-one had been able to contact the workers since the assault on Monday.
The area around Dumeir has seen fierce fighting between government forces and IS militants in recent days.
The workers were employed at the Badiyah factory, just outside Dumeir, about 25 miles (40km) east of the capital.
Syrian state television, quoting an unnamed industry ministry source, said 300 workers and contractors had been kidnapped from the factory by IS militants.