Three arrested over NSW armed robberies

Two teenagers and a 64-year-old woman have been charged over several armed robberies at service stations in the NSW Hunter region.

Police say the two 18-year-olds and the woman were arrested at separate addresses on Wednesday and charged with with several offences related to the hold-ups between June and July.

One of the men was refused bail and is due to face Newcastle Local Court on January 18.

The woman was also refused bail and is due in the same court on Wednesday.

The other teen was granted bail and will face a children's court on December 19.