An 84-year-old man has been missing from Miami-Dade County’s Fontainebleau neighborhood since he was last seen off Northwest 8th Street and 82nd Avenue, and deputies are now asking the public for help finding him. Juan Wensceslao Mieses is described as a missing endangered adult, according to the Miami-Dade Sheriff’s Office, and detectives are actively seeking the public’s help locating him.
Mieses was last seen wearing floral shorts, yellow socks, and a shirt and shoes of unknown color, according to WSVN 7News. He is described as standing 5 feet 8 inches tall and weighing 180 pounds, with white hair and brown eyes. The Fontainebleau area where he vanished sits west of Miami International Airport near West Flagler Street and the Palmetto Expressway, a densely populated residential pocket of unincorporated Miami-Dade, according to Compass Real Estate.
What the Missing Endangered Adult Designation Means
Officials designated Mieses a missing endangered adult, a status that in Florida triggers specific search protocols for older residents. Under state guidelines, a Local Silver Alert applies to missing individuals 60 or older, or adults with cognitive incapacity, who show verified irreversible deterioration of intellectual faculties, requiring local police to broadcast the alert, log the case in the Florida Crime Information Center database, and notify news outlets, according to the Florida Department of Law Enforcement.
A search does not automatically escalate to a statewide alert with highway message signs. Elevating a case to a State Silver Alert, which activates Florida Department of Transportation overhead highway signs, requires that the missing person be traveling in a motor vehicle with a known description and license plate, per FDLE. Because Mieses was last seen on foot rather than in a car, the search relies on the local alert and direct community outreach rather than statewide highway signage.
Statewide Support and the Odds of a Quick Recovery
Behind the scenes, Florida’s Missing Endangered Persons Information Clearinghouse, operated by FDLE, runs around the clock to provide analytical support and coordinate Silver, AMBER, and Purple alerts across the state’s law enforcement agencies. Statewide case data shows Florida agencies handle more than 12,000 active missing adult cases annually, with fewer than 1% still unresolved after a year, per FDLE records.
Wandering is a common risk for older adults with cognitive decline. The Alzheimer’s Association reports that roughly 6 in 10 people living with Alzheimer’s disease or other dementias will wander from safety at least once, often more than once. Research cited by the Caregiver Action Network indicates about 94% of missing individuals with dementia who wander on foot are found within 1.5 miles of where they were last seen, underscoring why concentrated searches near Northwest 8th Street and 82nd Avenue remain the priority for investigators.
Agency Behind the Search
The Miami-Dade Sheriff’s Office reported Mieses missing, per the agency. MDSO is the successor to the former Miami-Dade Police Department, which operated for nearly 60 years before the county officially restored the sheriff’s office in January 2025 under elected Sheriff Rosie Cordero-Stutz, according to background compiled on Wikipedia. The agency is now the largest sheriff’s office in the southeastern United States, with roughly 3,200 sworn deputies and 1,700 civilian personnel spread across eight district stations countywide.
Officials are urging anyone with information about Mieses’ whereabouts to contact authorities. Tipsters can reach MDSO Deputy D. Guzman at his desk phone number, 305-715-3292, or his office line at 305-715-3300, or email [email protected]. Anonymous tips can also go to Miami-Dade Crime Stoppers at 305-471-TIPS (8477).
