Police are appealing for information following an armed robbery in Sydney’s west overnight.

About 10.45pm (Tuesday 4 July 2017), two men, armed with a knife and a hammer, entered a supermarket on Woodcroft Drive, Woodcroft.

The man armed with the knife, jumped the counter and took money from two cash registers in the service counter area.

The man armed with a hammer struck the screen of the checkout.

Both armed men ran from the store with a sum of cash. They were last seen running south along Woodcroft Drive.

Officers from Blacktown Local Area Command attended and established a crime scene.

Investigators as part of their inquiries would like to speak to two men who may be able to assist.

The man armed with the knife is described as medium build, wearing a black hooded jumper, dark track pants with a white stripe and a dark coloured cloth covering his face.

The man armed with the hammer is described as wearing a grey hooded jumper, dark track pants and a blue cloth covering his face.