CTV- Police say a man injured 4 with a hammer on a German train before he was detained
They identified the suspect as a 20-year-old Syrian national.
Three of the four injured passengers also were Syrians, a boy of 15 and two men aged 24 and 51. The fourth victim was a 38-year-old passenger whose nationality was not yet known, police said. All four injured passengers were taken to nearby hospitals.

“Known to police” … “a history of mental illness” … in 3–2-1 …
“Trying to turn his life around…”
3-2-1 … too!
Traumatized as a teenager. He had his arse patted in a Cologne swimming pool by a fat redhead.
So it wasn’t Heinrich Hammler.