Can we draw the following hypothesis from the context?

Context:

Friedrich Wilhelm Konrad von Brodowski, known at "Fritz", (November 26, 1886 October 28, 1944) was a German army general, controversially killed while in French custody during World War II. His death led to the murder, by way of a reprisal, of an imprisoned French army general, Gustave Mesny.

Hypothesis: Fritz was killed in French custody.
Yes