Poland's Jan Kulczyk richest businessman dies at 65

Jan Kulczyk, Poland's richest man and the founder and president of investment empire Kulczyk Holding, died in Vienna on Wednesday from complications following a surgery. He was aged 65.

Former Polish president Lech Walesa said that Kulczyk was irreplaceable and added that it would be hard to "organise some things without him".

Walesa further said that Kulczyk previously suffered a heart attack and was not in good health, yet he "was absorbed in his work, in all the problems".

For years, Kulczyk, a lawyer and manager by education, led lists of the richest Poles and was reputed for his courage and imagination in business decisions. He invested in the energy and natural resources sectors in Europe and in Africa, and also developed the car and infrastructure sectors in Poland.