Investigators in a North Georgia mountain community said Thursday they have made three more arrests in last month’s murder of a 19-year-old woman — bringing the total number of arrests to seven.

The Gilmer County Sheriff’s Office said Aspen Leigh Cagle, 15; Madison Alina Grace Perez, 19; and Elizabeth “Rylie” Sue Henson, 17, have been booked into jail. Cagle is charged with murder and robbery, Perez with murder, and Henson with robbery.

“These charges stem from this entire group conspiring to commit and committing a series of armed robberies between Ellijay and Jasper,” Sheriff Stacy Nicholson said. “Unfortunately, Mallory Warden was killed during one of these planned robberies.”

Warden, 19, was found with a gunshot wound inside a vehicle on South Main Street in Ellijay on September 18, as CrimeOnline reported. She was taken to a hospital, where she later died.

Investigators soon determined that the shooting took place outside Ellijay, on a rural Gilmer County road. Four people — Gray Anthony McClure, 21; Robert Gabriel Shoilekov, 17; Davonnte Lavon Brehon, 18; and Anthony Jared Inestruza Whisnant, 19 — were arrested and charged with felony murder.

Nicholson said after the latest arrests that the “investigation is not over, and we expect more arrests.”

“We intend to charge everyone involved in this case, whether they were physically there or merely helped plan, to send a message that if you help someone commit a crime in any way, you will go to jail,” the sheriff said.

The sheriff did not say if the victim was part of the robbery crew.

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[Featured image: Mallory Lyric Warden/obituary photo]