Russia's air force carried out strikes on two militant sites in Syria outside the area of al-Tanf, Russia's RIA state news agency reported on Sunday, referring to the region of a US military base.

Citing Captain Oleg Ignasyuk, the report did not specify the location but said the militants had recently left the al-Tanf area, which borders Jordan.

"Russian Aerospace Forces have struck two identified sites of militant who left the al-Tanf zone," RIA quoted Ignasyuk, who is also theputy head of the Russian Reconciliation Center for Syria, as telling a briefing.