The death toll in suspected Israeli airstrikes on Aleppo province in Syria has risen to 46, a monitoring group reported on Friday, with three Hezbollah fighters confirmed to be among the dead.
The Syrian Observatory for Human Rights, which has been reporting on violence in the country since the start of the civil war some 13 years ago, said it was the most serious Israeli strike on Syria in three years.
Israel's army said upon request that it did not wish to comment on the reports.
The pro-Iranian Lebanese Shiite movement Hezbollah confirmed the death of three fighters following the airstrikes. The group published the names of the three members without providing further details, but Hezbollah sources confirmed to dpa that the fighters were killed in Syria.
The observatory reported that at least seven Hezbollah fighters had been killed, as had 36 Syrian government troops and three pro-Iranian militiamen of Syrian nationality.
More than 100 people were injured, it added.
The Hezbollah fighters were killed when a missile hit a militia warehouse and a Hezbollah training centre located in the Jibreen area near Aleppo International Airport at dawn on Friday, the group said.
The Israeli bombing also targeted defence factories in al-Safira, the observatory said, and explosions sounded in Kafr Joum, west of Aleppo.
Earlier on Friday, a separate airstrike, this time near the Syrian capital Damascus, killed at least one person and wounded five others affiliated with pro-Iranian militias on Friday, the observatory said.
The group said the Israeli strike hit a Hezbollah headquarters in the al-Bahdalia area near Sayyida Zeinab. Five Syrian nationals working with Hezbollah were also wounded in the strike.
The state-run Syrian News Agency (SANA) reported that "the Israeli enemy launched an aerial aggression from the direction of occupied Syrian Golan, targeting a residential building in Damascus countryside," citing a military source.
Israel has been bombing targets in Syria with the goal of hitting Iran's Islamic Revolutionary Guard Corps (IRGC) and the pro-Iranian militias, among them the Lebanese Hezbollah, based there.
Israel aims to prevent Iran and its allied militias from expanding their military influence in the country.
Israeli attacks have increased on Syria since the Gaza war began on October 7.
Syria is still in the midst of a civil war, and Friday also saw a drone attack on the city of Aleppo and its surroundings carried out by Syrian rebels based in Idlib.
The rebel strongholds are in north-west Syria and the western countryside of Aleppo.
Syrian media did not give an exact number of casualties. Residents in Aleppo told dpa that plumes of smoke rose from the targeted areas, and dozens of ambulances were seen heading to the site of the strikes.