The suspect has said that he had entered the bank in Sebring, about 85 miles south of Orlando, and began shooting, according to Hoglund. Responsibilities identified the suspect as 21-year-old Sebring resident Zephen Xaver, who is in custody.
"We've suffered significant loss at the hands of a senseless criminal doing a senseless crime," Hoglund said.
It was not immediately clear if those shot were bank employees or customers. The victims have not yet been identified and have not been made, according to authorities.
"This is a terrible day for Sebring, Highlands County and the state of Florida," Gov. Ron DeSantis said.
'I have shot five people'
The incident began shortly after 12:30 p.m., officials said.
"I have shot five people," the caller said, according to Sebring Police. Sebring Police and Highlands County Sheriff's Office deputies responded to the scene.
Initial negotiations to get the barricaded suspect to leave the bank were not successful, so a SWAT team entered the bank and continued negotiations.
The suspect eventually surrendered to the SWAT team at US-27, between Lake Jackson and Little Lake Jackson, police said.
The FBI and the Florida Department of Law Enforcement are assisting in the case. Authorities are still investigating the motive.
Suspect's father says he is heartbroken for the victims
"I'm heartbroken for my son," said Josh Xaver, an Indiana resident who said he is Zephen Xaver's father. "I'm heartbroken for the victims," he said in a phone interview on Wednesday.
The elder Xaver said that he moved to Florida about a year ago.
"He was always a good kid He's had his troubles," he said without elaborating, "but he never hurt anyone ever before."
"This is a total shock," he said.
Suspect worked as a correctional officer trainee for two months
Zephen Xaver was a correctional officer trainee at Avon Park Correctional Institution and resigned two weeks ago, according to Patrick Manderfield, a spokesperson for the Florida Department of Corrections.
The Manderfield said.
SunTrust Chairman and CEO Bill Rogers said company officials are deeply saddened by the tragic shooting at the branch.
"We are working with officials and dedicating ourselves to the needs of all the individuals and families involved." "Our entire team mourns this terrible loss," Rogers said in the statement.
"We ask you to keep them in your prayers, keep them in your thoughts," Hoglund said of the victims. "Help Sebring and our community stay strong."
CNN's Chuck Johnston, Joey Hurst, Curt Devine, Kate Trafecante and Danielle Hackett contributed to this report.