An investigation into a robbery on Sunday, June 7 has led to the arrest of a Noarlunga Downs teenager.
Two teenage boys who disembarked a southbound train at Oaklands Park Railway Station about 7.55pm were approached by a teenage girl after walking a short distance from the station.
The girl appeared to have a firearm under her shirt, and she threatened the pair, demanding they give her their belongings.
She took their grey Lacoste satchel and black Nike satchel and fled, and the boys followed her before they lost sight of her around Crozier Terrace.
The suspect dropped a gellblaster while running away, and police seized it and inspected CCTV footage.
As a result of the investigation, Southern District Police identified and arrested the 16-year-old Noarlunga Downs girl suspected of the robbery 10 days later, on Wednesday, June 17.
She was charged with two counts of aggravated commit theft and was refused police bail.
She faced Christies Beach Youth Court on Thursday, June 18, where she was refused bail and remanded in detention until her next hearing at Adelaide Youth Court on Wednesday, July 15.