Following the departure of Dimitrov and Kolarov for the northwest, there were no preparations for the uprising in Sofia. The reason was that the Sofia branch of the BCP was dominated by supporters of legal action against Tsankov's government. Ultimately, a revolutionary committee was set up, consisting of Anton Ivanov, Dimitar Ginchev and Todor Atanasov, but it was uncovered and its members were arrested as early as 21 September. The lack of an uprising in Sofia allowed the government to use its best military units from Sofia to crush the uprising in other parts of the country.