The man who opened fire in Krakow's Main Market Square, causing the deaths of six people, died in hospital on Monday morning. This was reported by Qazaqyia.kz citing Sputnik Kazakhstan.

"We inform you that the person responsible for the tragic incident died in hospital this morning," the police said in a statement on the social network X.

Earlier, Poland's Prosecutor General Waldemar Żurek said the suspect who shot at passers-by in Krakow could face life imprisonment. According to the official, the attacker acted alone. However, investigators are now checking his connections.

"We must wait until the special services and police have checked all his contacts via phone and the internet. They will determine who he was in contact with and whether any organizations or other people are behind this attack," Żurek said.

The incident occurred on Saturday. A 24-year-old man opened fire on passers-by from a car moving through the old part of the city. The terrorist attack killed at least six people and injured another 16. Some of the victims are in serious condition.

The attacker was wounded during his arrest and taken to hospital. He turned out to be a Polish citizen. According to Polish Radio, a large amount of ammunition was found in the attacker's car. He fired from a military-style long-barreled weapon.

The bodies of three people were found in the suspect's home. According to preliminary assumptions, he killed his sister and parents. Seven firearms were also found in the apartment. The weapons are believed to have belonged to the attacker's father. He had a permit to carry weapons.

The Polish prosecutor's office has opened a criminal case under the article on terrorism.