There were terrorists from Persian Gulf Arab countries among the detainees, our correspondent in Syria said.
In eastern Ghouta, army units pounded terrorists' dens, killing a number of them.
Syrian army forces advanced against militants in other areas in Rif Dimashq province.
Army forces also have advanced around some of the eastern outskirts of Aleppo city, reopening its international airport to the east.
The air force has also waged a relentless campaign against eastern parts of the city, including dropping explosives-packed “barrel bombs.”
Government troops also sought to push forward with an offensive against besieged neighborhoods of Old Homs, as a rebel and a lieutenant in the National Defense paramilitary group were killed in the clashes, it added.
The Syrian army launched an assault Tuesday against the rebel-held neighborhoods in Homs and “have achieved key successes” and “killed a number of terrorists,” Syrian television said.
BA/BA