MYSTIC, Conn. (WPRI) — Crews are working to determine the cause of a four-alarm fire that broke out at a marina in Mystic, Connecticut, late Sunday night.

Firefighters responded to the Seaport Marine on Washington Street around 9 p.m. and found heavy flames and smoke coming from multiple buildings.

Watch: Residents react to the massive fire (Story continues below.)

Mystic Fire Chief Anthony Manfredi said the fire destroyed a home and a commercial building that housed some businesses and storage units.

Manfredi added that there were propane tanks inside the storage unit that exploded and power lines fell and burned.

“I think the explosion woke me up,” Susan Graves, a longtime Mystic resident, said. “Because I just sat straight up out of a dead sleep and saw the flames and then just heard multiple explosions.”

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Strong winds made it tough for crews to put the fire out.

“It was a wind-driven fire, initially the wind was blowing to the south and it changed and started blowing to the north well into the incident,” Manfredi said. “It was very dangerous but everybody did a great job.”

The entire block was evacuated and a utility company temporarily turned off power for the area’s entire grid.

The fire was under control around 1:30 a.m. Monday but firefighters were still putting out hot spots throughout the morning.

No injuries were reported but one firefighter was evaluated at the scene for smoke inhalation.

The cause of the fire remains under investigation.