A second person has been charged over an alleged shooting in Hillston last month.

Strike Force Bettles was formed in September to investigate after officers attached to Murrumbidgee Police District were called to a home in Hillston in the early hors of the morning on Friday September 20.

Police were told a man and two women were in the home when three people allegedly entered the home, one armed with a firearm.

The 46-year-old man was allegedly shot in the abdomen before the three people left.

The man was treated at the scene by NSW Ambulance paramedics before being taken to Griffith Hospital.

He was airlifted to major metropolitan hospital where he remains in a serious but stable condition.

Following inquiries, Wednesday October 16, a 25-year-old woman was arrested after a vehicle stop in Griffith.

She was conveyed to Griffith Police Station and charged with conceal serious indictable offence.

She was refused bail and appeared at Griffith Local Court Thursday October 17, where she was granted conditional bail to reappear at the same court Wednesday October 23.

A 22-year-old man remains before the court charged in relation to the same incident.

Investigations under Strike Force Bettles are continuing.