The FBI and Denver police are searching for two “extremely violent” bank robbers coined the “Limp-Legged Bandits” and connected with two heists this year.

“During both robberies the suspects used the muzzles of their handguns to move customers and employees around inside the bank in addition to ordering them to get on the ground,” the FBI said in a Thursday news release.

The first armed robbery happened on April 17 at the Public Service Credit Union on the 7000 block of East Evans Avenue in Arapahoe County. The second happened July 8 at the First Bank on the 8900 block of East Hampden Avenue.

Authorities say the suspects were described by victims as possibly Hispanic or black men, about 20 to 30 years old.

The FBI says one of the suspects is about 5-feet 9-inches tall and has a stalky build. The other man is described as being about 6-feet tall with a slim build and a “pronounced” limp.

During the robberies, the suspects were armed with handguns and wearing gloves, masks, sunglasses, baggy clothes and baseball hats.

Witnesses told authorities in both robberies the bandits had a getaway driver.

The FBI says the suspects are possibly connected to a brown or tan Saturn SUV.

Anyone with information on the cases is asked to call the FBI Rocky Mountain Safe Streets Task Force at 303-629-7171 or Metro Denver Crime Stoppers at 720-913-7867.

Jesse Paul: 303-954-1733, jpaul@denverpost.com or twitter.com/JesseAPaul