Incident Summary:

"07/26/2016: An assailant tied up two staff members and stabbed patients throughout the Tsukui Yamayuri En facility for mentally disabled people in Sagamihara, Kanagawa, Japan. At least 19 people were killed and 26 people were injured in the assault. Satoshi Uematsu turned himself in to police and claimed responsibility for the incident, stating "it is better that disabled people disappear." Additionally, Uematsu had written a letter to the Japanese Parliament in February 2016 in which he urged the government to allow euthanasia for people with mental disabilities and outlined a plot to attack patients at two facilities."




East Asia

region/u.s. state:



Location Details:
The incident occurred in the Midori ward of the city.

Attack Information
Type of Attack (more) Armed Assault
Type of Attack (more) Hostage Taking (Barricade Incident)
Successful Attack? (more) Yes
Target Information (more)
Target Type: Business
Name of Entity Tsukui Yamayuri-en
Specific Description Facility
Nationality of Target Japan
Additional Information
Hostages Yes
Number of Hostages 2
US Hostages 0
Outcome Successful Rescue
Ransom No
Property Damage No
Weapon Information
Type Sub-type
Melee Knife or Other Sharp Object
Melee Blunt Object
Weapon Details
Knives and other sharp-edged tools, a hammer, and rope were used in the attack.
Additional Information
Suicide Attack?No
Part of Multiple Incident?No
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Doubt Terrorism Proper (more) No
Additional Information Casualty numbers for this incident conflict across sources. Following GTD protocol, the most recent reliable estimates are reported here.
Perpetrator Group Information
Group Name Claimed Responsibility
Opponents of disabled people Yes (Confirmed: Unknown; Mode: Personal claim)
Perpetrator Statistics
Number of Perpetrators 1
Number of Captured Perpetrators 1
Casualty Information
Total Number of Casualties 19 Fatalities / 26 Injured
Total Number of Fatalities 19
Number of U.S. Fatalities 0
Number of Perpetrator Fatalities 0
Total Number of Injured 26
Number of U.S. Injured 0
Number of Perpetrators Injured 0
"Letter by man accused of Japan stabbing carried a warning," The Associated Press, July 26, 2016."
"5TH LEAD," Deutsche Presse-Agentur, July 26, 2016."
"Japan knife attack: Suspect wrote of wanting to kill disabled people," CNN, July 27, 2016."