A 20-year-old Harlem man with autism has been missing since he walked out of his home around 7 p.m. Monday, and loved ones are growing increasingly worried as the summer heat drags into a fourth day of searching. Isaac Wilkie is described as verbal, about 5 feet 5 inches tall and roughly 220 pounds, and was last seen wearing blue jeans, a cream-colored shirt and green sneakers.
According to ABC7 New York, Wilkie disappeared from his home in Harlem, and his family believes he is likely in distress. The station reports a possible sighting placed him on a bus on the Upper East Side on Wednesday, though that lead has not led searchers to him yet. Loved ones posted pictures of Wilkie near his home Wednesday as part of a growing community push to find him, and the station notes their concern has intensified because of the hot weather.
Community Groups Mobilize With Behavioral Guidance
New York State Senator Cordell Cleare issued a public missing-person advisory instructing community members and responders to approach Wilkie calmly, avoid sudden movements or loud noises, give him space, and refrain from chasing him, since he is autistic and may not respond to his name, according to a Facebook post from Cleare's office. Cleare represents New York's 30th Senate District, covering Harlem and surrounding Upper Manhattan neighborhoods. The Young Adult Institute, known as YAI, also confirmed Wilkie receives its services and has circulated missing-person flyers across its network, a step that mobilizes one of the region's largest disability-support organizations behind the search. YAI serves more than 20,000 individuals with developmental disabilities across New York, New Jersey and California.
Anyone with information on Wilkie's whereabouts is asked to contact the NYPD 32nd Precinct, which covers Central Harlem, at (212) 690-6311, or the NYPD Missing Persons Squad at (212) 694-7781, per the flyers distributed by Cleare's office and disability advocacy groups.
A Familiar Route, and a Prior Disappearance
This is not the first time Wilkie has gone missing from the same stretch of Harlem. Community alert records posted by YAI show he disappeared from his family's home on West 133rd Street in July 2025, when he was 19, before being safely located and reunited with his family. Separately, local disability advocates reported an unconfirmed potential sighting of Wilkie on a D train at the 145th Street subway station the morning after he vanished this week, according to a post from the New York Alliance for Developmental Disabilities, which expanded the search beyond Upper Manhattan street blocks into the transit system. The 145th Street station is a major hub serving the A, B, C and D lines in West Harlem, and it remains unclear whether Wilkie's exact movements after any of these reported sightings have been confirmed.
Why Wandering Cases Move So Fast
Cases like Wilkie's are treated as urgent for a reason grounded in data. A study published in Pediatrics and tracked by the CDC found that about 49% of children and adolescents with autism spectrum disorder attempt to wander or elope from safe environments, a rate nearly four times higher than their neurotypical siblings. Research from the National Center for Missing & Exploited Children and the National Autism Association shows that when wandering turns lethal, accidental drowning accounts for over 90% of those deaths, since autistic individuals are frequently drawn to water or secluded areas.
That risk has already reshaped federal policy. Kevin and Avonte's Law, reauthorized in 2022, provides federal grants to help local law enforcement and nonprofits fund tracking technology and wandering-prevention protocols. The law is named in part after Avonte Oquendo, a 14-year-old autistic student who disappeared from his Long Island City school in October 2013 and later drowned.
New York's Alert Gap and a Pending Fix
New York currently relies on a Missing Vulnerable Adult Alert system, established under Executive Law § 837-f-1 and managed by the state Division of Criminal Justice Services, to rapidly disseminate information when cognitively impaired adults 18 and older go missing and face a credible threat of harm. That program was signed into law in 2011. In July, state lawmakers introduced legislation to create a statewide Purple Alert, a notification system specifically designed to broadcast urgent alerts for missing individuals with intellectual and developmental disabilities, following the lead of six other states that already operate similar systems, according to the New York State Senate.
Wilkie's disappearance echoes a similar case Hoodline covered involving a missing Roosevelt Island resident with autism, underscoring how often Harlem and the broader city rally around families facing these searches. For now, Wilkie's family and neighbors are asking anyone who sees him to stay calm, keep their distance, and call police rather than approach him directly.
