Israel-Gaza War
Watch: IDF Spokesperson releases briefing regarding Rafah fire
According to the Spokesperson, the strike was conducted about 180 meters from the tents that caught fire, with a very small warhead.

The IDF previously revealed additional details of its investigation into the strike.
The IDF says that the strike involved a fairly low-yield bomb meant to reduce collateral damage, and that it may well be that the strike inadvertantly struck Hamas ammunition and rockets, setting off secondary explosions leading to the fatal fire.
A recording of two Gazans speaking after the attack appears to confirm this:
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