January 14, 2019
Pawel Adamowicz, 53, was taken to hospital, where he is in a critical condition after five hours of surgery.
The 27-year-old suspect, who has a criminal record, has been detained.
He said the Civic Platform party, which led the previous government and had supported Mr Adamowicz's re-election, had wrongfully imprisoned him.
Mr Adamowicz suffered very serious abdominal injuries during the attack. During a five-hour operation, the mayor was given 41 units of blood.
"He remains in a very, very serious condition," one of his doctors said early on Monday. "The coming hours will be decisive."
In a later update on his condition, doctors said Mr Adamowicz was not breathing on his own and a machine was helping to operate his heart and lungs.