Authorities in the US state of Pennsylvania are seeking two 'nuns' over an attempted armed robbery.

The FBI say the women entered a bank on Monday dressed in nun's habits and veils.

One woman was also wearing sunglasses. They were also armed with a black handgun.

They are described as Hispanic and between 5'00'' and 5'02'' in height.

#Wanted for attempted armed bank robbery today in #Tannersville PA: 2 H/F, ~5'-5'2"; wore nuns' habits/veils, had blk handgun. 215-418-4000 pic.twitter.com/Ujoxnjy3D2

— FBI Philadelphia (@FBIPhiladelphia) August 28, 2017

NBC 10 says the two women entered a Citizens Bank branch at around 12.30pm Monday, but fled before getting any cash.

The pair of 'nuns' are said to still be on the run.