Officials don't know the name, age or gender of the victims and they aren't releasing the names of people who were leasing the home. The county medical examiner will perform autopsies on the bodies to find out how they died.
Firefighters also saw fireworks inside the residence, but it's unclear what kind and where they were located, said Debbie Carter, spokeswoman for the sheriff's office yesterday.
Hours after the fire was reported about 6 a.M. (local time), firefighters were still there putting out hot spots at the more than 6,000-square foot (560-sq. Meter) home located north of downtown Tampa.
"It's in the back part of Avila, the million-dollar homes. It's a massive home," said Nacole Revette, a spokeswoman for Hillsborough Fire Rescue.
Avila is an exclusive enclave north of Tampa known for its mansions and heavy security. Many well-known athletes call the community home and over the years, various football, baseball and tennis players have bought homes in the subdivision, which has a country club and golf course.