Bicherakov and the Cossacks left for Baku and were replaced by British troops at Bandar e-Anzali, as Dunsterville waited for news from Baku of the local factions and changes in their views about British involvement. Although Dunsterville and the British consul at Baku wanted to conciliate the Bolsheviks at Bandar e-Anzali, the War Cabinet wanted him to suppress them but communication was difficult, with the Bolsheviks in control of the transmitter at the port. On 25 July about attacked the British garrison of at Resht and were repulsed; ten days later, Dunsterville gained proof of Bolshevik involvement, arrested the committee in Bandar e-Anzali, seized the wireless and installed Australian signallers. At Baku the situation had changed when the Ottoman advance on the oilfields began. Bicherakov and the Cossacks, with help from four Dunsterforce armoured cars, tried to stop the advance but the local troops ran away. Also on 25 July, Bicherakoff and a few British officers with the four Dunsterforce armoured cars, staged another coup d'état in Baku. A Centrocaspian Dictatorship was installed, Bicherakoff appealed for British aid and sent ships to Bandar-e Anzali to pick up the first troops. Dunsterville sent his intelligence officer, Lieutenant-Colonel C. B. Stokes and all the available to Baku, with news that the brigade and artillery he had requested were on the way.