Authorities believe the pair known as the "Incognito Bandits" are responsible for another Valley bank robbery.
The Federal Bureau of Investigation says a man walked into the Chase Bank near Tatum and Greenway roads around 6 p.m. on Thursday.
The man, armed with a black handgun, was wearing a wig, hat, mask and long pants.
No one was hurt, and the man left with an undisclosed amount of cash.
The FBI believes this robbery is the latest in a series by the "Incognito Bandits," who have been robbing Phoenix-area banks since March.
A woman has been seen working with the man, though investigators said she did not enter the bank during Thursday's robbery.
The FBI is offering a reward of up to $5,000 for information leading to the arrest and conviction of both suspects. Parkway Bank, one of the banks targeted by the pair, is also offering a $5,000 reward in the case.
Anyone with information is asked to call the FBI's Phoenix field office at 623-466-1999 or SILENT WITNESS at 480-WITNESS.