 The latter prevented his collection of revenue for the "haraç", endangering Radu Leon's reign; he also launched credible rumors that Greeks were preparing a massacre of the Wallachian natives, creating a panic.The Cantacuzinos instigated another boyar conspiracy, with participants barricading themselves in the Bucharest Metropolis Church.With crucial help from the "Seimeni", in late 1668 Șerban forced Radu Leon to sign a reiteration of the 1631 anti-Greek edicts.