GREENWICH — A lightning strike caused a roof fire at a office building at 100 West Putnam Ave. Sunday morning.
Firefighters believe the strike happened around 1 a.m.
“It had been smoldering for a while overnight,” Deputy Fire Chief Brian Koczak said.
About 25 firefighters responded to an activated fire alarm around 7:25 a.m. They noticed smoke while investigating and cut away layers of the roof to extinguish the flames, he said.
A 10-by-10 foot area of the roof was damaged from the flames and an unoccupied office on the third floor has water damage, Koczak said.
Strong wind gusts added a challenge to the firefighters.
“It wasn’t terrible but high winds helped fan the flames,” Koczak said.
There were no injuries.

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