
The person at the center of this case
Alexis Gabriel Rivera Gilbert
Justice for Alexis Gabriel Rivera Gilbert — the trail went cold in 2025, but the truth hasn't.
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What specific business or facility was he working at in Miramar, and did coworkers see him leave?
Did he have access to a vehicle, or was he using public transportation to commute?
Were there any witnesses at or near the Miramar work area who saw him on December 30th?
Alexis Gabriel Rivera Gilbert, a 19-year-old male, went missing on December 30, 2025, after leaving his workplace in the Miramar area of San Juan, Puerto Rico. He was last seen wearing a blue denim pants, black shirt with lettering, and retro-style sports shoes. The Puerto Rico Police Department is investigating his disappearance and seeks information from anyone who may have encountered him or have details about his whereabouts.
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Beyond the top three above — each detail below could be the thread that pulls this case open.
Why did he leave the work area—was it an unusual departure or part of his normal routine?
Even the smallest detail could be the key to solving this case.
Official wording
NamUs case MP154696. Missing person: ALEXIS GABRIEL RIVERA GILBERT.
Last known contact: 2025-12-30 in San Juan, All, PR. Circumstances: THE YOUNG MAN LEFT THE WORK AREA LOCATED IN MIRAMAR IN SAN JUAN, P.R.
Demographics: 19 years, Male, White / Caucasian. Physical description: 5 ft 0 in, 140 lbs, hair: Brown, eyes: Brown.
Clothing and accessories: Clothing: LONG DENIM PANTS IN BLUE, BLACK SHIRT WITH LETTERS THAT READ RHYMES,; Footwear: RETRO STYLE SPORTS SHOES. Investigating agency: Policia de Puerto Rico | 2025-1-566-015691 | 2026-01-13.
Young man left the work area located in Miramar in San Juan, P.R.
Any information, no matter how small, could be crucial to solving this case.
Any information, no matter how small, could be crucial to solving this case.