new2 Police: 4th person dead in Switzerland factory shooting (2)

In Switzerland a 42 years old man shooted in his factory near luzern , the man killed 2 people the he killed him selve after this, one othe seven other peoples that he had injured one of them dies in the hospital. 

The police hasn't said the names of the victims . the police dosen't know why the man make it , why he started the firing . the man was a long time employed in a wood panel manufacturer thats why the police dosen't know why he make this .

The man I think must know something why he turned so mad a man must be very mad or convinced  to kill him selve and other people I hoppe this things will not ingrees in numbers and we can avoid this if we make constantly psycological test of the employers