Published: Sep 25, 2010 8:27 PM EDT
Updated: Sep 25, 2010 5:27 PM EDT

MIAMI (AP) - The FBI says the hunt is still on for the bank robbers who pulled off a dramatic heist in South Florida.
      
Authorities say three masked, gun-toting thieves burst into a bank teller's apartment shortly after midnight Friday, holding him and his father hostage until the teller opened his Bank of America branch.
      
The intruders strapped what they said was a bomb to the man's chest and told him to make off with as much money as he could.
      
FBI spokeswoman Judy Orihuela said Saturday it's not known how much cash the robbers made off with, and tests are still pending to determine if the bomb was real.

Police are also searching for the teller's car, which the robbers stole.