The Syrian government has declared a unilateral three-day ceasefire, set to last until the end of Friday, the state-run news agency SANA reports.
The "regime of calm" had already entered into effect and would last until midnight on Friday night, according to the report, which did not specify a location for the ceasefire.
The announcement coincides with the Eid al-Fitr holiday marking the end of Islam's holy month of Ramadan.
The US and Russia brokered a nationwide ceasefire in February which held for a time but then collapsed under the pressure of localized fighting and a failed political process to end the violence.
There have been attempts since then to reach short-term cessations of hostilities that are often region-specific, but these have tended to be short lived.