A fire crew was called to the scene of a house on fire in the 7100 Block of Chambershill Road around 2 p.m., Middletown Volunteer Fire Department said.
Ammunition in the home reportedly caused the explosions witnesses and neighbors heard, according to dispatchers.
No injuries were reported but two dogs died at the scene, according to Swatara Township fire officials.
It remains unclear how the fire began.
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