Police Chief Tommy Alriksson told a news conference that the 18-year-old perpetrator at the school in the central town of Fagersta had been arrested. At least two teenagers were seriously wounded after a sword-wielding attacker entered a high school in central Sweden, authorities said, while media reported the perpetrator had been shot by police.Re... Key points and original sources are listed below.

• Police Chief Tommy Alriksson told a news conference that the 18-year-old perpetrator at the school in the central town of Fagersta had been arrested.S1

• At least two teenagers were seriously wounded after a sword-wielding attacker entered a high school in central Sweden, authorities said, while media reported the perpetrator had been shot by police.Re...S2