A sign of shelter is seen under dark clouds as hurricane "Irma" is approaching, in Miami, Florida, the United States, Sept. 9, 2017. (Xinhua/Yin Bogu)

WASHINGTON, Sept. 13 (Xinhua) -- Five people were confirmed dead Wednesday at a Florida nursing home after several days without power, raising the death toll from Hurricane Irma in the United States to at least 28.

The death toll from Irma climbed to at least 23 late Tuesday night, namely, at least 16 in Florida, at least three in Georgia and at least four in South Carolina, according to an ABC News report.

Rescue crews arrived at the Hollywood Hills Nursing Home, Broward County, shortly after 7:30 a.m. (1130 GMT) on Wednesday. Aerial footage showed patients sitting outside in wheelchairs and others being taken out of the facility on stretchers.

More than 100 patients were evacuated and will be relocated to safety, Broward County Mayor Barbara Sharief said at a press conference.

Power outages continue to plague the U.S. southeastern state, with 4.4 million customers still without power as of Wednesday morning, according to the Florida Division of Emergency Management. More than 21,000 people remain in shelters across the state.

The company said its customers on the state's east coast should expect most power to be restored by about Sept. 17, while customers on the state's west coast should expect that by Sept. 22.

According to the U.S. Federal Emergency Management Agency (FEMA), 90 percent of homes in the Florida Keys suffered some damage.

One quarter of all homes in the area were destroyed, FEMA Administrator Brock Long said Tuesday evening.

Irma made landfall on the low-lying islands of Florida on Sunday morning as a Category 4 hurricane, bringing 130 mph winds and a storm surge of 10 feet. It then moved north Monday, bringing heavy rain and wind through the northern Florida city of Jacksonville and then Georgia and South Carolina.

At least 10 in Cuba were also dead from Irma, which was the first Category 4 landfall in Florida since 2004.