An explosion occurred near the airport road in the Syrian capital Damascus on Saturday, witnesses said, reported Reuters.
Security forces cordoned off the area, the witnesses said. No other details were immediately available.
It was the first explosion in Syria since the car bomb assassination of Imad Moughniyah, military commander of the Islamist group Hezbollah, in February.
Last month, a senior security officer was killed at a beach resort near the port city of Tartous in mysterious circumstances, shaking the tightly controlled country.