Three unidentified men wearing ski mask robbed a North Side Burger King at gunpoint last week.
The manager identified herself and led the first robber to the safe. Meanwhile, his accomplices locked two other store employees in the freezer after taking their cell phones and wallets.
The robbers then fled with $2,600 in cash.
When authorities watched the video surveillance tape it appeared there was another accomplice keeping watch in the Burger King parking lot, police said.