Twenty others have been injured
At least 19 people have been killed in a knife attack at a centre for disabled people outside Tokyo.
At least 20 others have been injured (with some indicating the figure could be as high as 45) by the stabbings in the city of Sagamihara, a Japanese news agency is reporting.
Police say the man who attacked the care home was arrested on suspicion of attempted murder after turning himself in and saying: "I did it." It is believed that he was a former employee at the centre.
NHK is reporting that an employee of the disabled centre had called the emergency services shortly after 2.30am on Tuesday morning (6.30pm Irish time).
Richard Lloyd Parry, Asia editor for The Times newspaper, told Sky News: "From what we can see this is not any kind of political attack - this isn't like the sort of attacks we've been seeing in Germany in the past few days."It is somebody perhaps with a grievance - clearly someone who is deranged and very disturbed.
"These kinds of attacks in Japan are really very rare. It's an extremely safe country. Rates of murder and violent, serious crime of all kinds are low."
Mr Parry said that although gun laws in Japan are very strict, all Japanese people have very sharp knives in their homes which are used for cutting fish - and these are normally the weapons used in serious attacks