Amonia and Welding Cause of the Blast in Beirut?

🇱🇧 Lebanese Media, LBCI Lebanon News:
— “Preliminary security information talks about 2,700 tons of confiscated ammonia in the port exploded during the process of welding a small hole to prevent theft”— The Skies of Beirut after the dispersion of Chemical Mushroom (Nitrate + Ammonia).

Large, thick & toxic orange gas clouds (which probably explains reports of places of shortness of breath / strong smell in the air) covered the skies