The cause of the Monday blast in the breakaway region of Azerbaijan, where thousands have been fleeing for Armenia, was still unclear. Hundreds were wounded.
source https://www.nytimes.com/2023/09/26/world/europe/azerbaijan-nagorno-karabakh-explosion.html
source https://www.nytimes.com/2023/09/26/world/europe/azerbaijan-nagorno-karabakh-explosion.html