On 5 May 1929, to help Primakov’s detachment, a second Red Army detachment of 400 men was sent with 6 guns and 8 machine guns, under the command of a certain Zelim Khan (there is no direct documentary evidence of this, but many facts indicate that it was the commander of the 8th cavalry brigade of the Central Asian Military District, Ivan Yefimovich Petrov). The detachment was also dressed in Afghan uniform. On the way, he was confronted by a border outpost, which "in a matter of minutes was swept away" by the machine gun fire of the Red Army.[19][2]