On March 7, however, Fieldorf was arrested by the NKVD, and sent to Siberia. On March 27, the Soviets arrested Okulicki (see Trial of the Sixteen).
On March 7th, Fieldorf was apprehended by the NKVD and sent to Siberia.  On March 27th, the Soviets detained Okulicki in connection with the Trial of the Sixteen.