Deported to Riga 1941
The first transport of German Jews to Riga departed Berlin on Thursday, November 27, 1941 and arrived in Riga on Saturday, November 29, 1941. Whether the Jews were to be worked and starved to death over time, or simply murdered outright had not yet been decided upon. Apparently at the last minute, Himmler decided he did not want these German Jews murdered immediately; his plan instead was to house them in the Riga Ghetto in the dwellings to be made available from the murder of the Latvian Jews.
For this reason, on Sunday, November 30, 1941, Himmler placed a telephone call to Reinhard Heydrich, who, as head of the SD was also Jeckeln's boss. According to Himmler's telephone log, his order to Heydrich was that the Jews on the transport from Berlin were not to be "liquidated" (Judentransport aus Berlin. Keine Liquidierung). Himmler however only made this call at 1:30 in the afternoon that Sunday, and by that time, the people on the train were dead. What had happened was that there was no housing for the deported German Jews when they arrived in Riga, so the Nazis left them on the train. The next morning, the Nazis ran the trainload of people down to the Rumbula station. They took the people off the train, marched them the short distance and shot them all between 8:15 and 9:00 a.m.
Thereafter, on December 1, and, in a personal conference on December 4, 1941, Himmler issued strict instructions to Jeckeln that no mass murders of deported German Jews were to occur without his express orders: "The Jews deported into the territory of the Ostland are to be dealt with only according to the guideline given by me and the Reich Security Main Office acting on my behalf. I will punish unilateral acts and violations."
Himmler in Minsk
POW Camp Shirokaya