Air strikes in eastern Syria have killed at least 12 pro-government fighters, a war-monitoring group says.
In Damascus, the SANA news agency said coalition aircraft struck military positions between the towns of Boukamal and Hmeimeh in Deir el-Zour province. It did not report any casualties.
The Britain-based Syrian Observatory for Human Rights said the fatalities were not Syrian nationals but foreign fighters. It said the coalition was likely behind the strikes.
The Pentagon said it had "no information" to substantiate reports the coalition was behind the latest air strikes.
Late on Thursday, Syrian TV reported a military base in central Syria came under attack from "enemy" fire and that Syrian air defences confronted a missile attack. It did not give additional details.
Minutes earlier, SANA reported loud explosions at Dabaa airbase in Homs province.
Syria's government forces have relied on support from the Lebanese group Hezbollah and other regional militias, organised by Iran to wage war on Syrian rebels and IS militants.
