A seven-year-old child was killed by a knife-wielding assailant who attacked a teacher and pupils at a Zagreb primary school on Friday.
Health Minister Irena Hrstic said the attacker stabbed five people, wounding four and killing one. The suspect later injured himself and was detained.
"Five persons have been hospitalised and their lives are not in danger," Hrstic told reporters. They included the suspected attacker.
Interior Minister Davor Bozinovic said the attacker was a 19-year-old former school student, who entered the school in the middle of the morning and wounded the teacher and children with a knife.
"He ran away from the crime site and shut himself in a nearby health centre where he tried to injure himself with the knife," Bozinovic told reporters.
Bozinovic said the suspect had a history of psychological problems and had tried to commit suicide last year.
Zagreb Mayor Tomislav Tomašević proclaimed the Day of Mourning on Friday.
"We are horrified," Prime Minister Andrej Plenkovic said.
Israel and Iran-backed Hezbollah agreed to a ceasefire beginning at 4:00 PM (1300 GMT) on Friday, a US official said, after an escalation in hostilities in Lebanon sorely tested the US-Iranian interim deal to end the wider Middle East conflict.
British Transport Police said on Friday it was responding to reports of a collision involving two trains about 60 miles (96 km) north of London, with media reports saying the major incident had resulted in multiple injuries.
Italian Prime Minister Giorgia Meloni accused her one-time close ally Donald Trump of fabricating a story about her on Friday, after the US President told an Italian TV channel that she had "begged" him to take a photo with her at the G7 summit.
Switzerland said US talks with Iranian negotiators on a pact to end the Middle East conflict would not take place on Friday, as Vice President JD Vance dropped plans to travel to Geneva, adding to uncertainty whether a lasting truce can be found.
Norway is imposing a near ban on the use of generative AI tools by elementary school pupils while also restricting their use in the education of older children to prevent a negative impact on learning, the country's prime minister said on Friday.