Halton Regional Police said the blaze was reported around 11:20 p.m. on Saturday on Eighth Line.

Police say they arrested a "person of interest" about half an hour later not far from the scene.

Art Skidmore, president and CEO of Halton Hills Hydro, told Global News there was an over-current in its distribution system at around 9:30 a.m. on Thursday and it caused a power surge in the affected area.