A NSW woman has been arrested after staff at a Canberra photo printing business allegedly discovered child abuse material she had tried to print.

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The woman, from Wamboin in the NSW Southern Tablelands, allegedly attempted to print the images at a Belconnen store on Wednesday afternoon.

ACT Policing said the material failed to print because of a machine malfunction and the 36-year-old was refunded before leaving the store.

But staff later allegedly found multiple child exploitation images that had failed to print, and contacted police.

On Friday afternoon, police stopped a vehicle in Holt, and the woman was arrested.

She is due to face the ACT Magistrates Court on Saturday, charged with aggravated possession of child exploitation material.

Investigations are ongoing.