Location is targeted with three missiles, which have caused material damage - the report said the observatory.
It is also said that "does not know whether they were members of Hezbollah within the site or not."
It is specified that the attack occurred on the road leading to the province of Dara, but does not mention the extent of the damage.
Pro Asad military source denied the report, claiming that there was no Israeli military strikes inside Syria on Wednesday, but no official response.
Hezbollah TV station A-Manar also denied the report.
Israel has previously been accused of being rocketed targets in Syria, belonging to the Syrian army and Hezbollah, Assad ally.
- If the reports are true, then it was the second attack Israel since Russia launched an air campaign in the country where a civil war is raging - said the Israeli list haArec who actually calls the Reuters report.