At the incident site (Photo: CNN)
 
Hanoi (VNA) – Prime Minister Nguyen Xuan Phuc on December 12 sent a message of condolences to his Bulgarian counterpart Boyko Borissov over a recent serious gas explosion on a derailed tanker.

The explosion occurred in Hitrino village, Schumen province in northeastern Bulgaria at 5:40 am on December 10 (local time).

Five people were killed and at least 20 building were destroyed after the incident./.