An explosion was heard overnight Thursday in Syria's Quneitra province in the south, near the border with Israel, reported Syrian state television.
The state TV did not report further information about the explosion cause or source or whether it left any casualties.
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Earlier on Thursday, the U.S.-based Arabic-language news network Alhurra reported that a military drone had attacked a military convoy at the Syrian-Iraqi border as it entered Syria from Iraqi territory, citing an unidentified security source.
Following the attack, the Iranian-backed Hashed al-Shaabi paramilitary force reportedly closed the area surrounding the Iraqi border town of al-Qa'im near where the attack took place.
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According to the Syrian Observatory for Human Rights, the area where the attack took place is regarded as an entry point for the smuggling of weapons and there is no official border crossing nearby. No injuries were reported.
Reuters contributed to this report.