A 72-year-old man in Deltona, Florida, died overnight Thursday after going outside during Hurricane Ian to drain his pool, the Volusia County Sheriff's Office said.

The man is the first confirmed death related to Ian, now a tropical storm.

The man, whose name has not been released, "was using a hose to drain the pool down a hill and into a 30-foot-wide canal, where a steep decline into the water was extremely soft and slippery due to the heavy rain," according to an initial investigation.

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Fort Myers, Florida damaged by Hurricane Ian

Damaged boats lie on the land and water in Fort Myers, Florida, in the aftermath of Hurricane Ian on Thursday. (AP Photo/Wilfredo Lee)

The man's wife reported that he disappeared after going outside their home on Poinciana Lane near Lake Bethel. Deputies responded to the home around 1 a.m. EDT.

First, deputies found his flashlight, then they pulled him from the nearby canal. CPR efforts were "unable to revive him," the sheriff's office said, and he was later pronounced dead at the hospital.

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Sanibel Causeway in Florida is damaged in Hurricane Ian

A damaged causeway to Sanibel Island, Florida, is seen in the aftermath of Hurricane Ian on Thursday. (AP Photo/Wilfredo Lee)

"The Sheriff’s Office sends its sincere condolences to the victim’s family," officials said in a press release.

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Fox News' Julia Musto contributed to this report.