HIGH POINT, N.C. (AP) — Authorities in North Carolina have arrested a second suspect the killing of a pregnant 18-year-old and her unborn child.

Police said Sunday they'd arrested 16-year-old Jonas Thompson on a charge of first- degree murder in the death of Anastaista Ray. Hykeem Marquis Simmons, 21, was charged earlier this month.

Police said Ray and her unborn child died in early August after Ray was shot in the head. She was seven to eight months pregnant.

Witnesses told police they saw an SUV drive by Ray's residence and fire multiple shots. Her 32-year-old brother was also wounded. Officers found around 20 shell casings in the road.

Police have said the shooting may have been gang related.

It's unclear if Thompson has a lawyer.