Poland opens terrorism probe after Krakow shooting kills six

Poland's National Prosecutor's Office launched a terrorism investigation on Sunday into Saturday's mass shooting in central Krakow, in which six people were killed and 15 were wounded.

The 24-year-old Polish national, whom authorities described as "fascinated by far-right ideologies", opened fire at random in Krakow's historic centre using a semi-automatic rifle. Prime Minister Donald Tusk had already labelled the attack an act of terrorism.

Among the dead was a British national. The 15 wounded included nationals from Austria, Britain, Germany, Portugal and Russia, according to police statements to the PAP news agency.

Three more bodies were subsequently found at the suspect's home in Ostrowiec Swietokrzyski, around 150 kilometres northeast of Krakow. Police identified the victims as his parents — a 53-year-old man and a 52-year-old woman — and a 21-year-old sister. Seven firearms were seized from the flat, and further weapons were found in the suspect's car, Interior Minister Marcin Kierwinski said.

The gunman, identified in Polish media as Michal O., had no previous criminal record and was a member of a shooting club alongside his father. He was wounded in a shootout with police and remains in critical condition in hospital. Two police officers, including one named as Jakub Kulik, were also wounded; one was in serious but stable condition.

The Prosecutor's Office said it was investigating "the killing of six people... using a firearm, and the attempted murder of many others, including police officers, this act constituting a terrorist offence".

Warsaw announced two days of national mourning from Sunday. The usually busy square at the centre of the attack was sealed off with red-and-white tape on Sunday morning, with black flags and Polish flags bearing black ribbons visible across the city.