Marvin Bonilla was last seen leaving his home in Queens at about 5:40 p.m. on Wednesday, May 18, the NYPD said.
He walked east on Chandler Street toward Nameoke Avenue, police said.
Marvin is described as being about 4 feet tall and 100 pounds, with a thin build, black hair, and brown eyes, the NYPD said.
He was last seen wearing a red shirt, black pants, and carrying a gray backpack, police said.
Authorities asked anyone with information about Marvin's whereabouts to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
Tips can also be submitted online here.
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