The person at the center of this case
Alfredo Grifaldo Diaz
Missing Person · Open
46 years waiting · since 1980
Missing Person: Alfredo Grifaldo Diaz
Justice for Alfredo Grifaldo Diaz — the trail went cold in 1980, but the truth hasn't.
Start here
Key leads to think about
🎯
suspect
Lead #1What criminal investigation was underway in 1980 that involved Alfredo Diaz, and was he a suspect or witness?
👁️
witness
Lead #2Did anyone see Alfredo Diaz after August 13, 1980, or have information about his whereabouts?
💡
clue
Lead #3Why did detectives lose contact with Diaz during their investigation, and what circumstances led to his disappearance?
Alfredo Grifaldo Diaz, a 23-year-old Hispanic male, disappeared in McAllen, Texas on August 13, 1980 while detectives were conducting a criminal investigation. He has had no contact with his family for over 45 years, making this a long-standing cold case. The circumstances of his disappearance remain unclear, and investigators are seeking any information that could help locate him or determine what happened.
Try asking
Claim this imported case
A one-time $10 claim transfers this imported case workspace to your account. You get 10 uploads for this case, 25 daily AI questions for this case, and public tips with files route to you.
10 uploads25 AI questions/day
This does not start a subscription. When the included limits are reached, the Personal plan unlocks more workspace capacity.
Official wording
Source Narrative
NamUs case MP150712. Missing person: Alfredo Grifaldo Diaz.
Last known contact: 1980-08-13 in McAllen, Hidalgo, TX. Circumstances: Detectives were unable to locate Alfredo Diaz during the course of their criminal investigation in 1980.
Diaz has not had contact with family for over 45 years. Demographics: 23 years, Male, Hispanic / Latino.
Physical description: 5 ft 5 in, 150 lbs, hair: Black, eyes: Brown. Investigating agency: McAllen Police Department | 1980-19429 | 2025-08-18.
Timeline of Events
👤
1980-08-13
Last Known Contact
Alfredo Grifaldo Diaz was last known to be in McAllen, Texas. He was unable to be located by detectives during a criminal investigation.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:August 13, 1980
Last Updated:September 29, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 9566812000
You can remain anonymous
Leave a comment
Comments
Case Information
Incident:August 13, 1980
Last Updated:September 29, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 9566812000
You can remain anonymous