Authorities in Texas are searching for a 15-year-old boy who has not been heard from since Saturday.

KHOU reported that Damani “Markell” Parker was last seen walking in the 2500 block of Old Farm Road near Westheimer. Houston police said Parker has mild autism and schizophrenia.

Parker often stutters when he talks and avoids eye contact, according to police.

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Parker was described as being 6 feet tall, weighing 140 pounds, and having brown eyes and black hair. He was reportedly wearing a black hoodie, camouflage pants, and black shoes. He may be wearing sunglasses (even at night).

KHOU reported that TexasEquusearch started looking for Parker on Tuesday.

TexasEquusearch’s previous Facebook posts suggest Parker also vanished in mid-October. He was reportedly found safe four days later.

Anyone with information regarding Parker’s whereabouts should call the Houston Police Department’s Missing Persons Unit at 832-394-1840.

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[Featured image: Damani Parker/Facebook]