New Delhi, Nov. 17 -- At least 45 people, most of them Umrah pilgrims from Hyderabad, died in a bus accident near Medina. Their vehicle crashed into an oil tanker around 1:30 am (India time). A video capturing the aftermath of the accident has gone viral on social media.

The 19-second viral video shows thick black smoke rising fast from a fierce orange fire that has swallowed the vehicles. Flames spread across the road and climb the metal frames while heat distorts the air around them.

The bridge is surrounded by dry rocky hills and empty brown land, which makes the scene feel even more isolated. No people appear in the frame. No rescue teams are seen. A few seconds into the video, one can hear a secondary blast, probably caused by expa...