| Age at missing | 44 years old |
| Case ID | yasuko-koizumi-guillory |
| City en | Metairie |
| City geo ID | 4333177 |
| City slug | metairie |
| Classification | Missing |
| Classification en | Missing |
| County en | |
| County fips ref | 22051 |
| County slug | jefferson-parish |
| Created at | 2026-01-13T02:44:27+00:00 |
| Date of birth | 1954-09-15 |
| Disappearance details | Guillory was last seen in Metairie, Louisiana on February 16, 1999 at approximately 12:00 p.m. She was at her apartment in the 4000 block of Saxton Street at the time. Guillory disappeared under unclear circumstances and has never been seen again. She has a history of dropping out of sight for extended time periods. Guillory was born in Japan and adopted at the age of five. She used to live in Canada and may have returned to that country, but little information is available in her case and it remains unsolved. Investigating Agency Jefferson Parish Sheriff's Office 504-364-5300 Source Information Jefferson Parish Sheriff's Office State Crime Watch North American Missing Persons Network NamUs Updated 4 times since October 12, 2004. Last updated October 10, 2015; distinguishing characteristics and details of disappearance updated. |
| Disappearance details en | Guillory was last seen in Metairie, Louisiana on February 16, 1999 at approximately 12:00 p.m. She was at her apartment in the 4000 block of Saxton Street at the time. Guillory disappeared under unclear circumstances and has never been seen again. She has a history of dropping out of sight for extended time periods. Guillory was born in Japan and adopted at the age of five. She used to live in Canada and may have returned to that country, but little information is available in her case and it remains unsolved. Investigating Agency Jefferson Parish Sheriff's Office 504-364-5300 Source Information Jefferson Parish Sheriff's Office State Crime Watch North American Missing Persons Network NamUs Updated 4 times since October 12, 2004. Last updated October 10, 2015; distinguishing characteristics and details of disappearance updated. |
| Disappearance details word count | 132 |
| Distinguishing marks | Asian female. Brown hair, brown eyes. Guillory has skin discolorations on her back and her left arm, and tattoos on her right shoulder and her chest. She may use different dates of birth. Guillory was born in Japan. |
| Distinguishing marks en | Asian female. Brown hair, brown eyes. Guillory has skin discolorations on her back and her left arm, and tattoos on her right shoulder and her chest. She may use different dates of birth. Guillory was born in Japan. |
| Full name | Yasuko Koizumi Guillory |
| Full name en | Yasuko Koizumi Guillory |
| Height | 5'6 |
| ID | 5632 |
| Investigating agency | Jefferson Parish Sheriff's Office 504-364-5300 Source Information Jefferson Parish Sheriff's Office State Crime Watch North American Missing Persons Network NamUs |
| Missing since | 1999-02-16 |
| Official last updated | 2015-10-10 |
| Official update count | 4 |
| Official update history | distinguishing characteristics and details of disappearance updated. |
| Path | louisiana/jefferson-parish/metairie |
| Race | Asian |
| Race en | Asian |
| Sex | Female |
| Source info | Jefferson Parish Sheriff's Office State Crime Watch North American Missing Persons Network NamUs |
| State en | Louisiana |
| State ref | LA |
| State slug | louisiana |
| Status | active |
| Updated at | 2026-01-13T02:44:27+00:00 |
| URL path | louisiana/jefferson-parish/metairie |
| Weight | 115 pounds |
Guillory was last seen in Metairie, Louisiana on February 16, 1999 at approximately 12:00 p.m. She was at her apartment in the 4000 block of Saxton Street at the time. Guillory disappeared under unclear circumstances and has never been seen again. She has a history of dropping out of sight for extended time periods. Guillory was born in Japan and adopted at the age of five. She used to live in Canada and may have returned to that country, but little information is available in her case and it remains unsolved. Investigating Agency Jefferson Parish Sheriff’s Office 504-364-5300 Source Information Jefferson Parish Sheriff’s Office State Crime Watch North American Missing Persons Network NamUs Updated 4 times since October 12, 2004. Last updated October 10, 2015; distinguishing characteristics and details of disappearance updated.