(CNN) A gunman who barricaded himself in a SunTrust Bank in Florida killed at least five people in the branch on Wednesday, Sebring Police Chief Karl Hoglund said.

The suspect called authorities to say he had entered the bank in Sebring, about 85 miles south of Orlando, and began shooting, according to Hoglund. Authorities 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 wasn't immediately clear if those shot were bank employees or customers. The victims have not yet been identified and family notifications have not yet been made, according to authorities.

Zephen Xaver

"This is a terrible day for Sebring, Highlands County and for the state of Florida," Gov. Ron DeSantis said.

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