A gunman opened fire Tuesday in a hospital in the eastern Czech city of Ostrava, killing six people, police said.
"There are four dead and two seriously injured people on the site," regional police spokeswoman Pavla Jirouskova initally told the public Czech Television.
She added the suspect remained at large, with police asking the public for help.
Police have published a picture of the alleged suspect on Twitter, showing a man with receding ginger hair and wearing a red jacket.
Czech TV reported that he was about 180 centimetres (5.9 feet) tall.
"I can confirm a shooting at the Ostrava Faculty Hospital after 7:00 am (0600 GMT) today," Interior Minister Jan Hamacek tweeted.
The DNES daily reported on its website that the shooting had occurred at the trauma ward of the hospital in Ostrava, a steel hub located around 300 kilometres (190 miles) east of Prague.
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