DAMASCUS, June 11 (Xinhua) -- Consecutive explosions took place Monday inside arms depots in the Syrian Qalamoun region north of Damascus and near the Lebanese border, a monitor group and local media reported.
The explosions rocked the depots in the Al-Qutayfah area in the western part of Qalamoun region, 20 km from the Lebanese border, said the Syrian Observatory for Human Rights.
The watchdog group said it is not yet clear what caused the explosions in the arms depots.
Meanwhile, the pro-government Sham FM radio cited preliminary information saying that the explosions in the arms depots were caused by the high temperature.
The Observatory said the blast is not the first to take place in weapon depots, adding that similar explosions rocked arms depots of the Syrian army in the town of Mesyaf in the countryside of Hama on June 6.
On June 4, arms depots' explosions were reported in the eastern countryside of the northwestern province of Idlib, the Observatory said, adding that arms depots also exploded in the al-Jarah air base in Aleppo province on June 1.
It said the reasons for the blasts are unknown.