Four of the five people killed when a gunman opened fire in a Florida bank yesterday were employees of the bank, according to news sources. The fifth victim killed in the shooting at SunTrust Bank branch in Sebring was a customer.

One of those killed had only been a SunTrust employee for a few weeks.

Twenty-one-year-old Zephen Xaver is being held without bail after being charged with five counts of felony capital murder. Xaver was arrested by a SWAT team inside the bank after he called 911 to report the shooting.

Authorities have not released a motive for the attack.

Sebring, a town of 10,000 people, was stunned by the violence.

"Today's been a tragic day in our community," Sebring Police Chief Karl Hoglund said during a news conference. "We've suffered significant loss at the hands of a senseless criminal doing a senseless crime."

Xaver trained to be a prison guard with the Florida Department of Corrections for two months before resigning from the program.