He said the building has been sealed off for the criminal investigation but didn't give further details.
The facility's administrator, Jorge Carballo, said in a statement that it was cooperating fully with authorities.
The governor also ordered the AHCA and the Department of Children and Families to investigate the facility. Three people were found deceased at the site and three more died later, the police said.
"They're looking for answers", said Florida State Senator Gary Farmer, who's been talking to the families of those who didn't survive.
Evengeline Moulder, whose mother was taken to the hospital, said the deaths could have been prevented if the facility had adequate staffing. The death toll across the Caribbean stood at 38. A Tampa man died after the chain saw he was using to remove branches kicked back and cut his carotid artery.
Altogether, more than 100 patients there were found to be suffering in the heat and were evacuated, many on stretchers or in wheelchairs. Sharief said she has urged Florida Power & Light Co.to prioritize restoring power to places where the elderly and other vulnerable people live.
The incident prompted police to check on the 42 other nursing homes in Hollywood, which is located on Florida's Atlantic coast less than 20 miles north of Miami. Police said the causes of death were not immediately known.
The Daytona Beach Fire Department said on Twitter a generator had been running inside the home.
City officials described the interior as "excessively hot", despite portable air coolers and fans that, according to state records, had been placed throughout the facility.
Outages had fatal consequences at a nursing home in Hollywood, Florida, north of Miami. They were loved ones: Bobby Owens, 84; Manuel Mario Mendieta, 96; Miguel Antonio Franco, 92; Estella Hendricks, 71; Gail Nova, 71; Carolyn Eatherly, 78; Betty Hibbard, 84; and Albertina Vega, 99.
The vast majority of South Florida remains without power three days after Irma nailed South Florida.
The nursing home did have a generator, but it is unclear if the generator was functional, WSVN reported. The number of people remaining in shelters fell to under 13,000.
Power is just one of many concerns for the residents. Rescue crews went door to door in the 94-degree heat to check on people and hand out water, ice and meals.
"We stayed with her for about four hours and then they decided they were going to take all the equipment off", said Wingo, "and that was it. And we're not leaving".
The Florida Health Care Association also released a statement calling the situation "a profound tragedy".
The Florida Keys were particularly hard hit, with federal officials saying that 25 percent of homes were destroyed and 65 percent suffered major damage when Irma barreled ashore on Sunday as a Category 4 hurricane.
The nursing home has had a list of safety violations and citations, including two for not following generator regulations in 2014 and 2016.
US President Donald Trump will visit the hard-hit Florida cities of Naples and Fort Myres on Thursday to view the damage.
While staying in a hot building is risky for the elderly, experts say that the best thing for older people in a hurricane is often to shelter in a place, according to NBC.
Flora Mitchell arrived at the home trying to learn the fate of her 58-year-old sister, a stroke patient.
He said it was "inexcusable" that no one appeared to have called 911 as residents in their 70s, 80s and 90s sweltered without air conditioning in the summer Florida heat overnight.