Nassau police are asking for the public’s help in locating a 15-year-old Hempstead boy who went missing Wednesday night.

Milton Valencia was last seen leaving his home around 9 p.m., police said.

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He is described as 5-foot-6 and 170 pounds with black hair and brown eyes. Police do not know what he was wearing when he left.

Detectives are asking anyone with information to contact the Missing Persons Squad at 516-573-7347 or 911. All callers will remain anonymous, they said.