Dionisio Rios, 58, a Hispanic/Latino man and recent arrival from Mexico, was found shot and lying in the street on the evening of April 17, 1987, on the 3600 block of NE 125th Avenue in Portland, Oregon. A resident called 911 and Rios was pronounced dead, prompting a homicide investigation that remained unresolved.

Witnesses reported Rios in the hours before his death with two unidentified Hispanic men at a North Portland 7-11. The trio was seen in a 1980 maroon Oldsmobile with California plates. Police later located that Oldsmobile at 718 NE 64th Avenue and noted blood inside the vehicle, suggesting the killing or a key part of the assault occurred elsewhere. Investigators said Rios had connections to the Mexican drug trafficking trade, a possible lead that did not produce a suspect.

No arrests have been announced and the two men seen with Rios remain unidentified. If anyone saw Rios, the maroon Oldsmobile, or those two men in North Portland on April 17, 1987, please come forward with information.