TOKYO - According to Japanese media reports, 19 people were killed and at least 20 wounded in a knife attack early Tuesday at a facility for the disabled. The attack happened just west of Tokyo in a rare case of mass violence in Japan.

Police said they responded to a call about 2:30 a.m. from an employee saying something horrible is happening at the facility in the city of Sagamihara.

Police say a man turned himself in about two hours later. He's said to have left the knife in his car when he entered the police station. He has been arrested on suspicion of attempted murder and trespassing.

Japan's national broadcaster NHK reported the suspect, 26, is a former employee at the facility.