Chełmno extermination camp
In March 1942, Chaim Yerachmiel Widawski (1913–1986. later living in Antwerp) and Yitzhak Justman, (who lived for a short time in Israel and died in New York) two escapees from Chełmno extermination camp, arrived in Czestochowa and told Rabbi Chanoch Gad Justman the horror story that was beyond belief. The Rebbe's reaction to the news of Jews being gassed to death was intense: he collapsed and couldn't get up for several days.