Jail records did not indicate whether they have attorneys yet.
The special agent in charge of the FBI's Indianapolis field office, Bob Jones, described them as a "serial bank robbery crew — a professional crew" when they were arrested last week in Fishers.
Prosecutors said federal authorities first became aware of the defendants after a confidential informant said they were planning a number of bank robberies in June.
Authorities say FBI agents and Fishers police tactical teams had them under surveillance on the morning of June 26 when Hardy and Rogers allegedly surprised a bank employee as she unlocked the back door of a Fishers bank. They're accused of pointing a gun at her and forcing their way inside.
Hardy and Rogers allegedly bound the woman's hands and feet with plastic ties when the bank's vault couldn't be opened, took her car keys and then fled in her vehicle with their co-defendants following them, authorities said. They were later arrested.
Detention hearings for the five defendants are set for Wednesday in federal court in Indianapolis.