Isakowicz-Zaleski was born in
Kraków to a Polish father and an
Armenian mother. Starting in his high school years, he was engaged in several Roman Catholic youth organizations. After graduating, he entered a
seminary in his native city, which did not prevent him from being called for service in the
Polish People's Army. He served in the years 1975–1977 in
Brzeg. Both incidents happened in 1985, and came in the wake of the notorious 1984 murder of fellow Solidarity priest
Jerzy Popiełuszko. The first attack occurred in April at his mother's home, where after gagging him the agents burned a V sign – the victory sign of the outlawed Solidarity trade union which he supported – on his chest with a cigarette. His ordeal was later used by Polish director Maciej Gawlikowski in his 2006 film
To Intimidate the Priest. In 1988, as a priest of the workers, he participated in the strike in Nowa Huta's Lenin Steel Mill. At the same time, he began helping the poor and the handicapped, together with nuns from local convents. In 1987, he co-founded the charitable
Foundation of Brother Albert Chmielowski. He remained director of the Foundation, which owns a shelter in the village of
Radwanowice in the suburbs of Kraków. In 2006, after months of research at the
Institute of National Remembrance, he drafted a book on the collaboration between Catholic priests and government agents. However, Cardinal
Stanislaw Dziwisz denied him permission to publish it, unless it was vetted in advance by archdiocesan officials. On 3 May 2006, Father Zaleski was awarded one of Poland's highest Orders, the
Polonia Restituta (Order of Restored Poland) by President
Lech Kaczyński. In November 2006, he received an apology from the
nation's Catholic primate, Cardinal
Józef Glemp of
Warsaw, for earlier criticizing his research into collaboration between the clergy and the Communist-era secret police. In February 2007, he published (), a book on priests who cooperated with
communist secret services. On 9 January 2024, Isakowicz-Zaleski died in a
Chrzanów hospital. He was 67. == Activities ==