An electrical fire at an apartment complex in Ronkonkoma damaged four apartments Tuesday morning, Suffolk County police and fire officials said.

No injuries were reported.

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The fire at the Knob Hill apartments on Richmond Boulevard was reported at 7:45 a.m.

Fire officials said firefighters from Lakeland, Central Islip, Ronkonkoma, Bohemia, Nesconset and Hauppauge battled the blaze.

The cause of the electrical fire was determined to be accidental, police said.