Police arrested a German 27-year-old man after he stabbed four people at a Grafing, located 23 miles east of Munich, train station early Tuesday morning.

The suspect killed a 50-year-old man while he was on a train bound for Munich. He injured three other men, aged 58, 55, and 43. Witnesses claim the man screamed “Allahu akbar” during the attack, but officials said they do not have “evidence for an Islamist motive. Bavaria Interior Minister Joachim Herrmann said the man has “a history of mental health problems.”

From Deutsche Welle:

According to Karl-Heinz Segerer, the 27-year-old German suspect stabbed the first victim in a waiting train at the Grafing S-Bahn train station at around 4:50 a.m. The suspect, who was barefoot, then exited the train and stabbed a second person on the train platform. The attacker left the station and stabbed two further men who were cycling by outside.

Police arrived soon after and arrested the man, who offered no resistance. Bloody prints from bare feet on the train platform could be seen in TV images of the scene as police carried out their investigation later.

One of the victims later died of the injuries. Another remains in serious condition.

Palestinians have used knives to attack Israelis in the last six months months. Israel reported 120 attacks between October and December with Prime Minister Benjamin Netanyahu calling the knife attacks “a new kind of terrorism.”

Amos Harel, military and defense analyst for Ha-aretz, said younger Palestinians have chosen to use knives or sharp objects to attack Israelis:

Obviously the most common weapon here is knifing and stabbing. The interesting aspect from my view is that it’s mostly done by very young people, and that these young people are not afraid to die at all. These youngsters are perfectly aware that most chances are that they will get killed anyway.

In March, a Palestinian attacked Yonatan Azarib, an Israeli, in Petah Tikva. Azarib managed to take out the knife and killed his attacker with it.

[Featured image via YouTube]