Roma and Sinti in Auschwitz

Footnote (page 111) of the book INSIDE THE GAS CHAMBERS: EIGHT MONTHS IN THE SONDERKOMMANDO OF AUSCHWITZ by Shlomo Venezia (first published 2007):

The first Roma and Sinti (Gypsies) deported to Auschwitz-Birkenau arrived in the camp at the beginning of December 1942, even before the December 16, 1942 publication of Himmler’s decree setting out the arrangements for the deportation of Gypsies to the camp there. From February 1943 onwards, they were systematically incorporated into the camp without undergoing selection, and maintained in Sector BIIe (Zigeunerlager: Gypsy camp). On March 22, 1943, a first Aktion put to death one thousand, seven hundred Gypsies suspected of having typhus. Five hundred others were gassed in May. Between May and August 1944, several Gypsies were transferred to camps inside the Reich. Those who remained (2,897 in total) were eliminated in the gas chambers at Birkenau on the night of August 2-3, 1944, when the Zigeunerlager was liquidated.