Timeline of the warnings seen before Japan knife attack


Warnings of potential danger had been seen before an attacker with a knife killed 19 disabled people and injured 24 others and two staffers in a residential facility near Tokyo this week. Satoshi Uematsu, a former employee at the facility, has been arrested. Some of the recent events being seen now as warnings he intended to carry out an attack:

—Dec. 1, 2012: Uematsu starts working at the Yamayuri-en residential facility housing about 150 mentally disabled patients.

—Feb. 6, 2016: Yamayuri-en executives confront Uematsu about his tattoos, making sure he hid them at work.

—Feb. 15, 2016, 12:35 p.m.: Uematsu visits Parliament’s lower house, and after sitting outside the house speaker’s official residence for two hours, delivers a letter in which he wrote that all disabled people should be put to death. He boasted in the letter he had the ability to kill 470 disabled people in what he called “a revolution,” and outlined an attack he would carry out on two facilities, after which he said he would turn himself in.

—Feb. 15, 2016, 3:30 p.m.: Parliamentary security officials notify Tokyo police, handing over Uematsu’s letter.

—Feb. 15, 2016, 4 p.m.: Tokyo police report back to the lower house, saying that they referred the letter to the local police overseeing the area Uematsu lived.

—Feb. 18, 2016: Police in Tsukui, where he lived, contact the Yamayuri-en over Uematsu’s letter.

—Feb. 19, 2016: Yamayuri-en executives confront Uematsu over the letter and his earlier remark to colleagues that all the disabled should be put to death. Local police stand by while they meet, and put him in protection status, legally sending him to a mental treatment requiring emergency hospitalization.

—Feb. 20, 2016: Uematsu tests positive for marijuana use, but reporting the result to police is not mandatory.

—Feb. 22, 2016: Two doctors diagnose Uematsu as having mental conditions that potentially harm others, keeping him hospitalized.

—March, 2, 2016: Uematsu’s doctors say he has been deemed safe for release, with the permission from the city of his residence conditional on living with parents. They had moved out of the residence, however, so Uematsu lives there alone, after 12 days of hospitalization for mental treatment.

—March 10, 2016: Sixteen security cameras are installed at Yamayuri-en, as recommended by police.

—July, 26, 2016: Nineteen patients are killed and others are injured in a knife attack at Yamayuri-en. Uematsu surrenders to the police.

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