A massive blast rocked Idlib city on Wednesday, August 15 night after an ammo depot belonging to Hay’at Tahrir Al-Sham exploded, Al-Masdar News reports.

According to pro-opposition activists, the blast took place at a Hay’at Tahrir Al-Sham ammo depot that was located near the governor’s mansion in Idlib’s city-center.

The total number of casualties as a result of the explosion is still unknown; however, some activists claimed that many Hay’at Tahrir Al-Sham members were killed.

Furthermore, the reason for the blast at the Hay’at Tahrir Al-Sham ammo depot is still unknown.

No further details were released at this time.

The latest explosion in Idlib comes just a week after 59 people were killed inside the provincial town of Sarmada near the Turkish border.