Authorities in Texas have issued an Amber Alert for two young girls believed to be in grave or immediate danger.

Zylah Faulks, 2, is described as 2 feet 9 inches tall and 30 pounds with black hair and brown eyes. Kamil Brown-Sykes, 9, is described as 3 feet 9 inches tall and 80 pounds with black hair and brown eyes, the National Center for Missing and Exploited Children said.

No photo was available for Zylah.

San Antonio police believe the girls were abducted by Julio Najar-Trevino, 29. He is described as 6 feey tall and 190 pounds with brown hair and hazel eyes.

He is driving a gray 200 Saturn Aura with Texas license plate number SWS6018. He was last seen in San Antonio.

Anyone with information should call San Antonio police at 210-207-7660 or 911.

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[Featured image: Julio Najar-Trevino, left, and Kamil Brown-Sykes/National Center for Missing & Exploited Children]