The "then disaster" part maybe could be fleshed out a bit more - from other reporting, it seems the proximate cause of the explosion was that they had a welding

The "then disaster" part maybe could be fleshed out a bit more - from other reporting, it seems the proximate cause of the explosion was that they had a welding crew fixing the security problems, namely a missing door, and they accidentally set off fireworks also stored in the same warehouse (!). So ironically, it seems that it was the attempt to secure the stuff that ultimately caused the disaster.