About Leibl Rumaner (Berliner)
Early in April 1942, a number of Jews were seized from the Mlawa ghetto, several of them who were sick.
They were made to stand on boxes, their hands tied behind their backs and ropes tied around their necks while being taunted by German policemen.
As he stood there, Leibl Rumaner died of a heart attack.
The Holocaust - Martin Gilbert, page 321