Update as of 7:03 p.m.: He was found safe at Spanaway Lake Park.
Initial post: A 17-year-old boy with developmental problems was reported missing in Lakewood Monday.
Police said Ivan Cornelio-Birrueta left Clover Park High School about 10:30 a.m. and was last seen heading toward Towne Centre.
He has not been seen since.
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Corneilio-Birrueta's family said he does not have money on him and has never walked away from school or home before.
He is 5-feet-9 with a thin build, black hair and brown eyes.
Anyone who sees Cornelio-Birrueta is asked to call 911.