Condo exploded

My aunty's condo area, someone's rooms exploded.
she just bought the condo only, but have not moved in.

apparently there was a gas leak, then somehow some ignition source and then BOOM!
owners not home, but the maid inside was inside was hospitalized.

It was such a big explosion that the floors above and bottom glass shattered.

Even my aunt's side of the building was effected.

The shock wave was so strong that the building opposite , all glass shattered.
This is my aunty's room.
it was so powerful, that it even cracked the wood frames.

the sliding balcony door, dropped and crack.