An 18-year-old accused of shooting his teenage foster sister in the foot and then leading a SWAT team on a half-day search surrendered to DeKalb County authorities Wednesday.

Nathaniel Lopez was already facing aggravated assault charges in Henry County before the alleged shooting, DeKalb authorities said. Lopez faces three counts of felony aggravated assault and one count of felony battery in the Tuesday morning shooting that sent his foster sister to Grady Memorial Hospital.

Officials said Lopez and the girl argued and fought before he shot her twice. She was listed in stable condition.

Lopez was thought to have been holed up in his mother’s Stone Mountain home Tuesday when a SWAT team surrounded the neighborhood searching for him.

The teen was also wanted in connection with an aggravated assault in Henry County, where he and five others stole a .40-caliber Smith and Wesson, threatened a man at gunpoint and attempted to put him in the trunk of a car, according to a police report.

In that incident, one of the men allegedly posted a picture of him with the stolen gun on his Twitter page. It is not clear what Lopez’s role was in the alleged assault.

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