Six people have been killed and 16 others injured in a deadly shooting in central Krakow, Poland, as investigators continue to examine the circumstances surrounding the attack.

The city's main market square remains partially closed a day after the incident, with police activity and investigations continuing at the scene.

Authorities have confirmed that 15 of the 16 people injured in the shooting are now in stable condition. Two police officers who were also injured have regained consciousness and are recovering. The suspect, however, remains in critical condition.

In a further development, investigators discovered three additional bodies at the suspect's home. The deceased were later identified as his parents and sister. Their deaths have added another disturbing dimension to the investigation as authorities work to establish the full circumstances surrounding the tragedy.

Eyewitnesses have described scenes of panic and confusion following the shooting. British tourist Tom Brook recalled seeing several people who had been shot as he witnessed the aftermath of the attack.

Another witness, Ruby, described hearing gunfire and the terrifying moments when she and her friends realised they were in danger. The group immediately fled the area in an attempt to escape the violence.

The Krakow branch of Poland's National Prosecutor's Office has classified the incident as a suspected terrorist offence, signalling the seriousness of the ongoing investigation.

Poland's interior minister said the suspect, a Polish national, was believed to have been influenced by far-right ideologies. Police also confirmed that military-grade weapons were used during the attack.

Investigators are now working to establish the suspect's motives, determine the events leading up to the shooting and examine whether anyone else was involved.

As the investigation continues, Krakow remains shaken by one of the city's deadliest recent attacks. Authorities are expected to provide further updates as more details emerge about the victims, the suspect and the circumstances surrounding the violence.