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Kyodo News via Associated Press
An ambulance moves past in front of a facility for the handicapped where a number of people were killed and dozens injured in a knife attack Tuesday, July 26, 2016, in Sagamihara, outside Tokyo.

TOKYO (AP) — Japan's national broadcaster NHK reports that 15 people were killed and 45 injured in a knife attack Tuesday at a facility for the handicapped in Sagamihara, just outside Tokyo.

The report said police have arrested a knife-wielding man after he turned himself in.

NHK said the suspect, 26, is a former employee at the facility, Tsukui Yamayuri-en, on suspicion of attempted murder.

Television footage showed a number of ambulances parked outside the facility, with medics and other rescue workers running in and out.

Kyodo News agency initially reported that 19 people were killed and 20 injured, but later said at least 15 people were dead and 28 injured

Police did not immediately release an official death toll.