One person was killed and three others were injured in a crash at the intersection of Singleton Road and Dawn Way in Norcross, Gwinnett County police said.

A call came in about 6:40 p.m. Friday on the three-car crash. The surviving victims were taken to a hospital with unknown injuries, police said. Their conditions were not known.

The crash closed the roads as investigators pieced together what caused the crash.

No other details were released.

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