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.
At least 90 people have been killed in a gas explosion at a coal mine in China's northern province of Shanxi, the country's deadliest mining accident since at least 2009.
Iran's top negotiator, Parliament Speaker Mohammad Baqer Qalibaf, told Pakistani army chief Asim Munir during talks in Tehran on Saturday that the US was not an honest party in negotiations to end their war and Iran would not compromise on its national rights, state television reported.
US Secretary of State Marco Rubio discussed trade and energy with Indian Prime Minister Narendra Modi on Saturday on a visit aimed at shoring up relations battered by Washington's tariffs and engagement with New Delhi's rivals Pakistan and China.
An Israeli air strike targeting a Palestinian police post in northern Gaza has killed at least five officers on Saturday and wounded others, Gaza police said.
Uganda has confirmed three new cases of Ebola, bringing the total number of infections in the current outbreak there to five, the health ministry said on Saturday, as authorities stepped up contact tracing to contain the spread.