Andres Mendez-Rivas, known as Lenny, was 16 when he was last seen in Centereach, New York, on December 11, 2021. He is a Hispanic male with black hair and brown eyes, about 5 feet 1 inch and 125 pounds, and is missing three upper front teeth. Clothing at the time of disappearance is unknown. Authorities described the circumstances as unknown juvenile circumstances and believed he was in good physical and mental health when he vanished.

Investigators received tips that Andres may have traveled after he was last seen — possibly to Fairmont Park in Norfolk, Virginia, and there was a belief he could be with a male relative. Other leads suggested he might have gone to Phoenix, Arizona, and might be using the name Juan. He reportedly disappeared along with his brother, Nery Pinto-Rivas, after both failed to return to their home on Hammond Lane. The Suffolk County Police Department’s Sixth Precinct is handling the active investigation.

Anyone who knew Andres, his movements after December 11, 2021, or who has seen him using the name Juan is asked to contact the Sixth Precinct.