19 people are confirmed dead and 50 or more are seriously injured after an apparent nail bomb exploded after an Ariana Grande concert in Manchester, England.
A flash of light can be seen six seconds into the dashcam video above, then you hear the explosion.
For anyone who has ever attended a concert anywhere, this is particularly chilling.
Thoughts & prayers to the victims and their families.
Update: Numerous sources say UK officials are now calling this a "terrorist incident".
Below is video from inside the venue shortly after the explosion.
This video was taken outside the venue showing concert attendees panic-stricken and fleeing the scene.