A teenage attacker killed two women with a knife in a shopping centre in the Czech city of Hradec Kralove on Thursday before being detained shortly afterwards, police said.
Police were investigating the motive for the attack in the city 110 km (68 miles) east of Prague.
“Although we were on the scene within a few minutes of the report, both victims suffered injuries so serious that they could not be saved despite all efforts of responders,” the police said in a post on X.
A police spokesperson told Novinky.cz online news website the attack took place in a store at the outdoor shopping centre. The victims were employees at the shop.
The suspected male attacker, a 16-year-old Czech citizen, was detained 10 minutes after the incident, less than a kilometre away, the spokesperson said, adding a knife with a blade about 20 centimetres (8 inches) long was found nearby.
Hradec Kralove mapped:
Police had initially said the victims were wounded in the attack, before later reporting they had died from the injuries.
A paramedic responding to the scene told Novinky.cz that resuscitation efforts lasted around 40 minutes.
Prime Minister Petr Fiala offered his condolences to the relatives of the dead.
“What has happened in Hradec Kralove today is an absolutely incomprehensible and horrible act,” he posted on X.
The motive for the attack was not immediately known.
Police say the situation was under control and there was no danger to the public. No other details were immediately available.