Authorities summoned Pushkin to Moscow after his poem "Ode to Liberty" was found among the belongings of the rebels from the Decembrist Uprising (1825). After his exile in 1820, Pushkin's friends and family continually petitioned for his release, sending letters and meeting with Tsar Alexander I and then Tsar Nicholas I on the heels of the Decembrist Uprising. Upon meeting with Tsar Nicholas I, Pushkin obtained his release from exile and began to work as the tsar's Titular Counsel of the National Archives. However, because insurgents in the Decembrist Uprising (1825) in Saint Petersburg had kept some of Pushkin's earlier political poems, the tsar retained strict control of everything Pushkin published and he was banned from travelling at will.