The attack took place on Friday morning at a school in the capital Zagreb. The alleged attacker, a 19-year-old young man, was arrested by the police.
A seven-year-old girl killed, three students and a teacher injured in a knife attack.
The tragedy took place in a school not far from the city center of Zagreb, the capital of Croatia.
According to police, the attacker is 19 years old and survived a suicide attempt last year.
The police arrested him a few minutes after the tragedy when he inflicted self-inflicted wounds with a knife.
Davor Božinović, Croatian Minister of the Interior: “I think at this moment I can say that this person was registered for his mental problems and a suicide attempt a year ago. The fact that he attempted suicide today shows that this person was not mentally stable. »
The attacker is a former student of the school, the attack took place in the corridors of the establishment.
The lives of the teacher and the three injured students are not in danger.